# The standard deviation of given population is 4.5 with a mean of 60 and the refit population has a standard deviation of 5.2 with a mean of 75. Calculate the coefficient of variation for both populations and comment on the

15,651 questions, page 59-
## Math Help Please!!!!

The breaking strengths (say, y) for one foot square samples of a particular synthetic fabric are approximately normally distributed with a mean of 2280 pounds per square inch and a standard deviation of 10.6 psi. a) find the probability of selecting a 1

*asked by Taylor on February 23, 2013* -
## Statistics

Research Question for Parts 1 and 2: A health psychologist wants to study overall student health on a university campus. One measure he decides to take is that of minutes exercised per week. Assume that we know from previous studies that the population

*asked by Fredla on December 2, 2012* -
## Statistics

1. Use the following to answer questions: The table below presents the probability distribution for X = the number of email messages you will receive in the next 10 minutes. (9 pts) X 0 1 2 3 P(X) .35 .35 .25 .05 a. What is the probability that no emails

*asked by Denise on March 3, 2010* -
## Math

The weights of individual nails produced by the 'Hammer 'n Nail' hardware company follow a normal distribution with the average nail weight being 5.1 grams and the standard deviation in nail weight being 1.6 grams. When a nail is produced it is discarded

*asked by Louise on September 28, 2010* -
## Statistics

I'm stumped on this question. A teacher informs her history class that a test is very difficult, but the grades would be curved. Scores for the test are normally distributed with a mean of 25 and a standard deviation of 5. If the grades are curved

*asked by Norilyn on March 15, 2011* -
## Algebra

Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than

*asked by Sally on June 9, 2016* -
## Statistics

A recent study stated that if a person chewed gum the average number of sticks of gum he or she chewed daily was eight. To teat the claim a researcher selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per day was

*asked by Camille on April 8, 2009* -
## Math

Last year, the personal best high jumps of track athletes in a nearby state were normally distributed with a mean of 229 cm and a standard deviation of 19 cm. What is the probability that a randomly selected high jumper has a person best between 229 and

*asked by Gia on May 24, 2012* -
## DRWLS

the estimate and uncertainty for experiment 1 is .15+-.01 and the .12+-.01 for experiment 2. Is the discrepancy between these two data sets significant? Why? I would say yes, the discrepancy is probably significant, because the measurements should agree to

*asked by Tiffany on October 18, 2008* -
## Chem

For the reaction, 3C2H2(g) ===> C6H6 at 25°C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K, Calculate the standard free energy change (in kJ) at 25°C. What is the formula that relates stand. entropy, enthalpy and

*asked by Ginger on March 30, 2008* -
## Chemistry

Consider an electrochemical cell based on the following cell diagram: Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard

*asked by Diana on November 15, 2010* -
## Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What

*asked by Jen on October 17, 2011* -
## Can somehelp me with this ASAP plz?!?!?! Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more

*asked by Jen on October 19, 2011* -
## Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more

*asked by Jen on October 18, 2011* -
## Stats

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 I. What score was earned by more

*asked by Jen on October 19, 2011* -
## math check please

region Population land area 1000mi^2 Asia 4,028,000,000 17,400 North America 305,000,000 9,400 1. Compare the populations per square mile in asia to the population per square mile in north america A: Asia 231.49mi^2 North America 32.45mi.^2 could some one

*asked by tammy on January 24, 2007* -
## Statistics

2. The time (in number of days) until maturity of a certain variety of hot pepper is normally distributed, with mean m and standard deviation s = 2.4. This variety is advertised as taking 70 days to mature. I wish to test the hypotheses H0: m = 70, Ha: m >

*asked by Latoya on November 30, 2008* -
## Statistics

2. The time (in number of days) until maturity of a certain variety of hot pepper is normally distributed, with mean m and standard deviation s = 2.4. This variety is advertised as taking 70 days to mature. I wish to test the hypotheses H0: m = 70, Ha: m >

*asked by Soa on December 11, 2009* -
## Physics question

Students decide to measure a projectile's range for an initial projectile angle of 45°. This angle has many advantages, not the least being that since the expression for the range is proportional to the sine of twice this angle, errors in determining the

*asked by Anonymous on June 19, 2012* -
## statistics

SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. b. What is the minimum

*asked by Joanne on August 4, 2008* -
## statistic

the academic staff of a large university are provided with a PC each. it is known that after a number of years the PC need to be upgraded. The time interval before upgrading of the PC is distributed normally with a mean of 24 months and a standard

*asked by pusaran on May 19, 2012* -
## precal

You can find the size of a population after t years using the formula N = No(1 + r)^t where No is the initial size of the population, N is the final size of the population, r is the rate of growth or decay per time period, and t is the number of time

*asked by Anonymous on September 2, 2010* -
## statistics

For classes of 273 students, find the mean and standard deviation for the number born on the 4th of July, Ignore leap years. For a class or 273 students, would two be an unusually high number who were born on the 4th of July? I don't know how to find how

*asked by slomomo on February 27, 2015* -
## statistics

Every year thousands of students take the SAT'S. RECENT TRENDS SHOW THAT THE SCORES ON THE VERBAL SECTION FOLLOW AN APPROX. NORMAL DISTRIBUTION WITH MEAN 550 AND STANDARD DEVIATION OF 110 68.26% OF THE STUDENTS WHO TAKE THE SAT VERBAL SCORE BETWEEN ______

*asked by todd on February 10, 2008* -
## Stat help

An article claimed that the typical supermarket trip takes a mean of 22 minutes. suppose that in an effort to test this claim, you select a sample of 50 shoppers at a local supermarket. the mean shopping time for the sample of 50 shoppers is 25.36 min.

*asked by tanya on April 3, 2008* -
## Dine

Men spend an average of 29 minutes per day on weekends and holidays exercising and playing sports. They spend an average of 23 minutes per day reading. A random sample of 25 men resulted in a mean of 35 minutes exercising with a standard deviation of 6.9

*asked by angie on November 10, 2014* -
## Chemistry

The standard entropy change for 1.00 moles of Ar as it evaporates at -185.7 °C (∆H°-185.7 = 1558 cal mol-1) is? 1. 17.8 J mol-1K-1 2. 87.5 J mol-1K-1 3. 15.0 J mol-1K-1 4. 46.0 J mol-1K-1 5. 74.5 J mol-1K-1 6. none of the previous answers I thought I

*asked by Anonymous on November 17, 2015* -
## Algebra

I know that standard form is Ax+By=C, but I'm not really sure how to do this problem. All help is welcome. Thanks in advance. Write an equation for each line: through (-1,3) and parallel to y=2x+1 I know that the slop will be 2 because it is parallel. If

*asked by Faramir on September 25, 2006* -
## Statistics

The amount of Jen's monthly phone bill is normally distributed with a mean of $55 and a standard deviation of $12. Calculate the z score for each scenario. What percentage of her phone bills are above 79? What percentage of her phone bills are between $31

*asked by Amy Penn on September 25, 2016* -
## Math check

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.37 0.09 0.05 0.14 0.35 (a) Find

*asked by Nora 55 on June 2, 2013* -
## Chem

In conjunction with a standard hydrogen electrode, the La3+|La half-cell is the anode and the standard cell potential is 2.52V. What is the standard reduction potential for the La3+|La half-cell?

*asked by Ginger on March 31, 2008* -
## Chem (Check)

The accepted value of a length measurement is 200cm, and the experimental value is 198cm. Circle the letter of the value that shows the precent error of this measuerment. a)2% b)-2% c)1% d)-1% is it b)-2% No. What is 2/200 * 100? Percent error =

*asked by Bryan on January 12, 2007* -
## Geography PLZZZZ HELP AND CHECK ANSWERS!!!!!!!!!!!

Which country shares an island with another nation? (1 point) A.1 B.2 C.3 (My answer) D.4 2. The number 2 marks which country? (1 point) A.New Zealand B.Indonesia C.New Guinea D.Tuvalu(My answer) 3. Based on the data, which nation most likely has the

*asked by Kailyn on January 31, 2017* -
## statistics

Using the 68-95-99.7rule. Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. percentage of scores less than 100 b. relative frequency of

*asked by Christine on May 10, 2010* -
## statistics

21. Payne (2001) gave participants a computerized task in which they first see a face and then a picture of either a gun or a tool. The task was to press one button if it was a tool and a different one if it was a gun. Unknown to the participants while

*asked by bren on December 8, 2009* -
## chemistry

consider a random mixture of two particles,diamond and SiC.Assume all particles are spherical with a radius of 0.100mm. The mixture is 80.0 wt% diamond(density=3.51 g/ml) and 20.0 wt% SiC (density=3.23 g/ml) a)Calculate the mass of a single particle

*asked by mahtab on October 2, 2012* -
## physics

. Consider a large number, N(0) , molecules contained in a volume V (0) . Assume that there is no correlation between the locations of the molecules (ideal gas). Do not use the partition function in this problem. (a) Calculate the probability P (V; N) that

*asked by esmat on June 13, 2011* -
## science

Which of the following is an example of population density? a) Asia has the highest birth rate b) the city of Philadelphia has over 200 people per square mile c) Brazil has the largest annual growth rate d) the population of south america is about 200

*asked by pam on September 9, 2010* -
## Business statistics

5. An Aspirin manufacturer fills bottles by weight rather than by count. Since each bottle should contain 100 tablets, the average weight per tablet should be 5 grains. Each of 100 tablets taken from a large lot is weighed, resulting in a sample average

*asked by Lizzie on March 25, 2015* -
## Science

fill in the blank questions monotremes, marsupials, and placentals have the same _____ known as the therapsid. a farmer sprays insecticide on his crops and notices that the insect pest problems disappear. a year later he tries the same insecticide only to

*asked by Anon on April 3, 2014* -
## Government

The top 1 percent of the American population possesses what percentage of the nation's wealth? A. 20 B. 27 C. 33 D. 39 The book says that the top 5 percent of the American population gets more than 21 percent of the national income. I'm thinking maybe c

*asked by Carrie on January 5, 2015* -
## statistic solution

The distribution of cash withdrawals from the automatic teller machine at a certain bank has a mean of $500 with a standard deviation of $70. To reduce the incentives for robbery, the bank puts money into the machine every 12 hours and it keeps the amount

*asked by Nancy on April 4, 2012* -
## statistics

For a particular sample of 53 scores on a psychology exam, the following results were obtained. First quartile = 44 Third quartile = 68 Standard deviation = 8 Range = 55 Mean = 54 Median = 54 Mode = 71 Midrange = 64 I. What score was earned by more

*asked by Mandy on January 27, 2013* -
## statistic

The distribution of cash withdrawals from the automatic teller machine at a certain bank has a mean of $500 with a standard deviation of $70. To reduce the incentives for robbery, the bank puts money into the machine every 12 hours and it keeps the amount

*asked by Nancy on April 7, 2012* -
## Grammar

Which sentence is grammatically correct? Most of the European population was peasants. or Most of the European population were peasants. Thanks!!!

*asked by Serena on August 21, 2013* -
## Calculus Please Help

Can you please explain these two questions to me? Suppose the population size of a predator is given by P (x) = 0.006x2 + 0.005x, where x represents the population of its prey. If the population of the prey is 10,000 at the first of January and is reduced

*asked by Eric on December 5, 2014* -
## Statistics

Suppose a researcher wants to study the effectiveness of a new reading program for students who have not acquired the necessary reading skills by the time they reach the 8th grade. A randomly selected group of 50 students from a local junior high with poor

*asked by Trey on October 11, 2009* -
## Stats

What is the probability that a simple random sample of 56 special orders will provide an estimate of the population proportion of special orders specifying the color black that is within plus or minus .05 of the actual population proportion,assuming p =

*asked by Anon on May 4, 2010* -
## Algebra

I have two questions-- 1.What is the population of a town after 6 years if it is increasing annually by 3.5%. The population is at 6,000 people right now. I did6000x(1+0.035)^6 = 7375.53 or 7376 people 2. The value of car is 28,000 dollars. If car

*asked by Trisha on November 14, 2011* -
## Statistics Please HELP

IQ Scores: Use the listed IQ scores. IQ tests are designed so that the mean IQ of the population is 100. Does the sample mean suggest that the sample is consistent with the population? IQ: 96 89 87 87 101 103 103 96 127 126 101 96 93 88 94 85 97 114 113

*asked by Lexus on May 14, 2016* -
## College Mathematics

Guys, could you please help me with this problem? I'm a bit lost. Consider a population that begins growing exponentially at a rate of 5% per year and then follows a logistic growth pattern. If the carrying capacity is 100 million, find the actual growth

*asked by Miguel on August 8, 2008* -
## bioloy

Choose ONE animal species. Your goal is to describe the way in which an evolutionary change might occur for a particular characteristic (trait) of a population of that species as a result of natural selection. The characteristic (trait) could be something

*asked by Kat on July 6, 2009* -
## statistics

A department store management claims that families spend an average of $625 on gifts during the Christmas season. A sample of 120 families showed that they spent an average of $665 on gifts during the past Christmas season with a standard deviation of

*asked by Badar on December 26, 2011* -
## Statistics

Battery manufacturers compete on the basis of the amount of time their products last in cameras and toys. A manufacturer of alkaline batteries has observed that it's batteries last for an average of 26 hours when used in a toy racing car. The amount of

*asked by Austin on November 20, 2013* -
## Statistics

Suppose that the number of customers who enter a supermarket each hour is normally distributed with a mean of 540 and a standard deviation of 150. The supermarket is open 14 hours per day. What is the probability that the total number of customers who

*asked by June on February 13, 2009* -
## buisness finance

Series Average return Standard Deviation Large-company stocks 10.7 % 19.3 % Small-company stocks 16.4 33.0 Long-term corporate bonds 6.2 8.4 Long-term government bonds 6.1 9.4 Intermediate-term government bonds 5.6 5.7 U.S. Treasury bills 3.8 3.1 Inflation

*asked by jnea on May 1, 2014* -
## Statistics

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1264 chips and a standard deviation of 116 chips. (a) Determine the 28th percentile for the number of chocolate chips in a bag. (b)

*asked by Amanda on June 30, 2015* -
## Math

7. Most powerful business women in America. Consider that the data set is a normal distribution with a mean of 50 years and a standard deviation of 5 years. A powerful woman is randomly selected from the data, and her age is observed. Please calculate the

*asked by Karen on December 17, 2012* -
## Statistics

7. Most powerful business women in America. Consider that the data set is a normal distribution with a mean of 50 years and a standard deviation of 5 years. A powerful woman is randomly selected from the data, and her age is observed. Please calculate the

*asked by Karen on December 17, 2012* -
## Statistics Mean and Median Question

Statistics Find The Mean and Median Question 28. IQ Scores: Use the listed IQ scores. IQ tests are designed so that the mean IQ of the population is 100. Does the sample mean suggest that the sample is consistent with the population? IQ: 96 89 87 87 101

*asked by Lexus on May 13, 2016* -
## pre-calculus

Assume that the number of bacteria follows an exponential growth model: P(t)=P0ekt . The count in the bacteria culture was 900 after 20 minutes and 1600 after 30 minutes. (a) What was the initial size of the culture? (b) Find the population after 80

*asked by kevin on November 7, 2016* -
## math

a species of orchid is being studied. The population 'p' at time 't' years after the study started is assumed to be p = 2800ae^0.2t/1 + ae^0.2t where 'a' is a constant. Given tnat there were 300 orchids when the study started. a. show that a =0.12 b. use

*asked by lindsay on March 18, 2013* -
## math

The Mexican long-tongued bat population is an endangered species, which decreases at a rate of 3.5% per year in a wildlife preserve that currently has 80 of them. What type of function will model the population? A)constant B)exponential growth C)linear

*asked by Rylee on January 8, 2018* -
## Math/Pre-calculus

Assume that the number of bacteria follows an exponential growth model: P(t)=P0e^k/t. The count in the bacteria culture was 400 after 10 minutes and 1500 after 35 minutes. (a) What was the initial size of the culture? (b) Find the population after 85

*asked by liza on June 19, 2017* -
## Geography

How do landforms and climate affect the distribution of population? My answer: Landforms and climate affect this due to some lands being unsuitable for human habitation, which influences where people live, resulting in population distribution.

*asked by Anonymous on September 5, 2013* -
## socio

pls help me on here. 1.) what is the total population of asia in 1980 and 2009. 2.) What is the total population of phillipines in 1980 and 2009. thanks. can't find it in web.

*asked by konan on February 14, 2009* -
## math

The population of the US is about 3.02 X 10^8, and the average American uses about 1.5x10^2 gallons of water per day. Could this lake supply the American population with water for 1 day?

*asked by maia on August 26, 2011* -
## Statistic

The number of customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of 200. The supermarket is open 16 hours per day. what is the probability that the total number of customers who enter the

*asked by Tony on December 8, 2010* -
## Statistics

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.37 0.09 0.05 0.14 0.35 (a) Find

*asked by Gayle on May 27, 2013* -
## Math Statistics

The annual per capita consumption of fresh apples (in pounds) in a nearby state can be approximated by a normal distribution, with a mean of 15.9 pounds and a standard deviation of 4.2 pounds. (a) What is the smallest annual per capita consumption of

*asked by Ann on April 1, 2013* -
## statistics help

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.38 0.1 0.07 0.12 0.33 (a) Find the

*asked by Kim5 on June 15, 2013* -
## Statistics

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What

*asked by Denise on May 20, 2011* -
## Statistics

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode = 98 Midrange = 57 Answer each of the following: I. What

*asked by Denise on May 19, 2011* -
## statistics

For a particular sample of 80 scores on a psychology exam, the following results were obtained. First quartile = 65 Third quartile = 98 Standard deviation = 8 Range = 56 Mean = 83 Median = 81 Mode = 59 Midrange = 64 Answer each of the following: I. What

*asked by christy on February 2, 2012* -
## statistics

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 72 Standard deviation = 9 Range = 52 Mean = 72 Median = 68 Mode = 70 Midrange = 57 Answer each of the following: I. What

*asked by Dawn on September 29, 2012* -
## statistics

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 47 Third quartile = 81 Standard deviation = 11 Range = 68 Mean = 70 Median = 71 Mode = 77 Midrange = 55 Answer each of the following: I. What

*asked by Celest on July 10, 2011* -
## statistics

The ages of commercial aircraft are normally distributed with a mean of 13.0 years and a standard deviation of 7.5 years what percentage of individual aircraft have ages greater than 15 years assume that a random sample of 49 aircraft is selected and the

*asked by Tanya on April 24, 2012* -
## math

A rectangular floor 8 feet long and 6 feet wide is to be completely covered with tiles. Each tile is a square with a perimeter of 2 feet. What is the least number of such tiles necessary to cover the floor? A)7 b)12 c)24 d)48 e)192 ^I got C A culture of

*asked by Aline on February 9, 2018* -
## gen Chem

I've attempted this problem but not sure if i'm on the right track. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following

*asked by Vince on October 26, 2010* -
## Math

Which type of graph would you use to display the data for each of the following purposes: a. To predict the world's population growth in the future b. To compare the percent of Canada's population with each blood type c. To look for a relationship between

*asked by Isabella on March 5, 2017* -
## Math

The population size, P, of owls (predators) in a certain region can be modelled by the function P(t) = 1000 + 100 sin (3.14t/12), where t represents the time in months. The population size, p, of mice (prey) in the same region is given by p(t) = 20 000 +

*asked by Molly on December 1, 2010* -
## Statistics

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. Show your work. a. Highest 10 percent; b. Highest 50 percent; c.

*asked by Shon on September 8, 2010* -
## data

on a standard Iq test the scores are normally distributed with a mean of 100 and a standard devaition of 20. A. if you score 140 in whst precentile are you? B. if you score 90 on what percentil are you?

*asked by Linda on October 8, 2008* -
## chemistry

If in August 1911 Mme. Curie prepared an international standard containing 20.00 mg of RaCl2, what will the radium content of this standard be in August 2010?

*asked by Massiel on April 24, 2011* -
## Statistics

The percent of fat calories that a person in America consumes each day is normally distributed with a mean of 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen for an experiment. A) Is it appropriate to use the normal

*asked by Brandy on November 19, 2015* -
## Math-statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantiles: a.percentage of scores less than 100 b. relative frequency of scores less than 120 c.

*asked by Jane Brown on March 1, 2013* -
## statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100 b.Relative frequency of scores less than 120

*asked by TAW on November 21, 2010* -
## scientific notations

Explain how to convert seven point one three times ten to the eleventh from scientific notation to standard form, then give the answer in standard form.

*asked by none ya on January 18, 2012* -
## ap chemnstry

What is the standard reaction free energy if the standard cell emf is 1.23? Faraday’s constant is 96485 C/mol. Answer in units of kJ/mol

*asked by Gabriella on September 26, 2013* -
## Chemistry need help

using standard potentials given in the appendices calculate the standard cell potentials and the equilibrium constants for the following reactions. Zn(s)+( Fe^2+(aq)) ---> (Zn^2+(aq))+ Fe(s) If anyone can show work, then I can do the rest of my homework by

*asked by Kader on April 19, 2014* -
## chemistry(check my answer)

From the Standard Potential Table in your general chemistry textbook: Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. 2H+ + 2e–H2 B. Li+ + e–Li C. O2 + 4H+ + 4e–2H2O D. F2 + 2e–2F– E. H2 +

*asked by eng on April 29, 2010* -
## Chemistry

From the Standard Potential Table in your general chemistry textbook: Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. 2H+ + 2e– ==> H2 B. O2 + 4H+ + 4e– ==> 2H2O C. F2 + 2e– ==> 2F– D. Li+ + e–

*asked by Lily on April 21, 2008* -
## computer c++

write a program that produce a bar chart showing the population growth of Prairieville, a small town in the Midwest, at 20 year intervals during the past 100 years. the program should read in the population figures (rounded to the nearest 1000 people) for

*asked by mike on April 5, 2010* -
## Statistics

28. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 144 students. The statistics showed that students

*asked by Steph on October 22, 2011* -
## STATISTICS HELP!!!!!!!

Statistical Abstracts (117th edition) reports sale price of unleaded gasoline (in cents per gallon) at the refinery. The distribution is mound-shaped with mean μ = 80.04 cents per gallon and standard deviation, σ = 4.74 cents per gallon. (a) Are we

*asked by Amy on August 10, 2011* -
## Math/Statistics

According to the U.S. census bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States: Missouri 5,911,605 Pennsylvania 12,448,279 Tennessee 6,214,888 Utah 2,736,424 Washington 6,549,224

*asked by Rodney on May 1, 2011* -
## statistics3. Sick-leave records obtained from a ra

3. Sick-leave records obtained from a random sample of 200 social workers showed a mean number of days sick leave equal to 25.6 last year. If the sample standard deviation is 5.1, construct a 90% confidence interval for the mean number of days sick leave

*asked by CYNTHIA on March 29, 2013* -
## stats

2. A standardized exam was provided to all 3rd graders in Arizona schools. The average score was 75 with a standard deviation of 10. Assuming that the scores were normally distributed, answer the following questions. (a) What z-score corresponds with a

*asked by taylor quenzler on July 26, 2012* -
## Critical thinking

I have finished my assignment I just need someone to read it over and check my logic, please and thank you! 1. Read the following argument and answer the question that follows: 1. According to the 2010/11 Statistics Canada census aboriginal Canadians

*asked by Dan on December 6, 2015* -
## Geography

Supposed to estimate the percentage of houses that will be uninhatitable in each of the residental neighbourhoods. Ex. population of riverside is 325 total population of all the neighbourhoods is 7415 do i just take 325 and divide it by 7414? to get the

*asked by Carrie on September 28, 2008*

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**59**- 60
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- 157