# 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 64-
## maths

The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

*asked by albert on May 14, 2011* -
## maths

The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

*asked by albert on May 13, 2011* -
## maths

The variation in a population is modelled by the recurrence relation (Jn+1 0.9257 0.0208) (Jn) + (0.014) (An+1 0.0661 0.9767) (An) (0.056) where Jn and An are the sizes, in millions, of the subpopulations of juveniles and adults, respectively, n years

*asked by albert on May 12, 2011* -
## maths

*asked by albert on May 17, 2011* -
## statistics

An animal trainer obtained the following sample data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs that were much older than the first group and measure their reaction times to

*asked by Anonymous on October 16, 2009* -
## Math

Part I: Statistical Measures Statistics is a very powerful topic that is used on a daily basis in many situations. For example, you may be interested in the age of the men who attend Silver’s Gym. You could not assume that all men are the same age. Thus,

*asked by Phylicia on September 20, 2013* -
## Statistics

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

*asked by Katie on November 10, 2013* -
## College Chemistry

I was asked to find delta Grxn for the equation I2+Cl2--->2ICl. Was given information to solve for Q (PICl= 2.55atm, PI2=0.315, PCl2=0.216), i ended up with 4.4588. Then I solved for the standard G rxn by: Delta G= (-10.9*2)- (19.3+0)= -41.1. I used the

*asked by Mel on April 7, 2010* -
## Math

Last one! Please help! South America's total population was 515,000,000 and the world's total population was 6,279,000,000. What percentage was South America rounded to the nearest tenth?

*asked by Sadie on February 22, 2009* -
## statistics

A researcher wants to estimate the proportion of a population which possesses a given characteristic. A random sample of size 250 is taken and 40% of the sample possesses the characteristic. The 95% confidence interval to estimate the population proportion

*asked by John on January 22, 2011* -
## statistics

According to Advertising Age, the average base salary for women working as copywriters is $66,000. Assume that the salaries are normally distributed and that the standard deviation is $7,500. a. What is the probability of a woman receiving a salary between

*asked by petrit on June 25, 2013* -
## Math

The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs will be between what

*asked by Keonn'a on February 18, 2018* -
## statistics

Assume a binomial probability distribution has p = .60 and n = 200. a)What are the mean and standard deviation (to 2 decimals)? b)Why can the normal probability distribution be used to approximate this binomial distribution? c)What is the probability of

*asked by Vanessa on April 5, 2014* -
## college math - biostatistics

hey... first time user and really lost. wondering if someone can help: Based on data from the Statistical Abstract of the United States, 112th Edition, only about 14% of senior citizens (65 years old or older) get the flu each year. However, about 24% of

*asked by will on February 18, 2009* -
## stats

test the claim, identify null hypothesis, alternative hypothesis, test statistic, p-value and critical values, and conclusion The health of the bear population in Yellowstone national park is monitored by periodic measurements taken from anesthetized

*asked by josh on December 4, 2017* -
## Art PlZ HELP MEE!!!

Unit 4 Lesson 5 10. All of the following help an artist to learn to experimentation except A. Using standard materials in that manner in which they were intended. B. using standard techniques in new combinations to Create different effects. C. Creating new

*asked by Samantha on January 6, 2016* -
## College Chem

Calculate the enthalpy of reaction from the standard enthalpies of formation of the reactant and product molecules. 2C2H6+7O2-->4CO2+6H20 I am using the back of my book for the standard enthalpies of formation, but cannot seem to find the HoF for C2H6?

*asked by Betsie on May 8, 2011* -
## WorldHistory

significant consequences of the Agricultural Revolution. EFFECT ON WOMEN LIVES: The British Agricultural Revolution was the cause of drastic changes in the lives of British women. Before the Agricultural Revolution, women worked alongside their husbands in

*asked by (; on May 6, 2013* -
## Chemistry

The following reaction has a standard enthalpy of reaction of -146.0 kJ/mol: Cu2O(s) + 1/2 O2(g) -> 2CuO(s) The standard enthalpy of formation of Cu2O(s) is -168.6 kJ/mol. What is the standard enthalpy of formation of CuO(s)?

*asked by James on March 11, 2011* -
## statistics

Suppose the number of customer complaints per day on the morning shift 6-12 noon at Doys is distributed as # of complaints f(x) 0 .3 1 ? 2 .2 what is the value of the missing probability? What is the average number of complaints per day on the morning

*asked by James on January 13, 2011* -
## Calculus

Complete the square to write the equation x^2 + y^2 - 6x - 2y + 4 = 0 in standard form. Use the standard form of the equation to identify the center and the radius of the circle.

*asked by Brock on July 5, 2012* -
## Chemistry

Which of the following substances have a standard heat of formation of zero? O2 at 25.O degrees C and 1 atm Fe at 1200 degrees C C2H6 at standard conditions Cl2 at 2 atm

*asked by Annie on June 19, 2013* -
## Chemistry

What is the slope of the standard curve? Absorbance Concentration (M) 0.330 6.00 x 10-4 0.264 4.80 x 10-4 0.198 3.60 x 10-4 0.132 2.40 x 10-4 0.0660 1.2 x 10-4 What is the slope of the standard curve?

*asked by Julie on March 20, 2018* -
## math

You randomly choose 16 unfurnished one-bedroom apartments from a large number of advertisements in your local newspaper. You calculate that their mean monthly rent is $613 and their standard deviation is $96. Does this SRS give good reason to believe that

*asked by arshi on November 19, 2013* -
## statistics

. Using the central limit theorem, construct a 95% confidence interval for the average total cry time for infants in the control group and infants in the intervention group. For this question only, assume that the standard deviation of cry time within each

*asked by Anonymous on January 14, 2013* -
## Statistics

A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 20 accounts was checked and yielded a mean balance of $664.14 and a standard deviation of 235.29. Assume the data is

*asked by Giselle on April 22, 2015* -
## statistics

Determine the sample size required to estimate a population proportion to within 0.032 with 95.7% confidence, assuming that you have no knowledge of the approximate value of the sample proportion. Sample Size = B. Repeat part the previous problem, but now

*asked by Joey on March 28, 2009* -
## stats

scores on a University exam are normally distributed with a mean of 68 and a standard deviation of 9. use the 68-95-99.7 rule to answer the following questions 1) what proportions of students score between a 59 to 77? 2) what proportions of students score

*asked by kayla on September 5, 2016* -
## Algebra

The number of bacteria in a certain population increases according to an exponential growth model, with a growth rate of 11% per hour. An initial sample is obtained from this population, and after four hours, the sample has grown to 4130 bacteria. Find the

*asked by Rachal on February 3, 2011* -
## statistics

Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. Find the probability that a randomly selected college

*asked by latoyia daniels on January 15, 2012* -
## statistics

An online site presented this question, 'Would the recent norovirus outbreak deter you from taking a cruise?' Among 34,327 people who responded, 66% answered 'yes'. Use the sample data to construct a 95% confidence interval estimate for the proportion of

*asked by slomomo on March 9, 2015* -
## precal

The Census Bureau reported that the population of the United States in 1995 was 262.9 million. Referring to the statistics on the second page of the Background Information for Project 4, how many crimes committed in 1995 occurred in the South? The

*asked by Anonymous on September 2, 2010* -
## Statistics-confused

A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.

*asked by Jen on October 8, 2011* -
## Statistics-confused

A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.

*asked by Jen on October 8, 2011* -
## Social Studies

Which statement best describes where most people live in Europe? A. Population is concentrated on the coast and in river valleys.++ B. Most people live in southern Europe. C. Population is concentrated in the mountainous central region. D. Most people live

*asked by dori on February 24, 2019* -
## math help pls pls pls

Create an example of a polynomial in standard form. How do you know it is in standard form? pls help me

*asked by Oscar on March 20, 2016* -
## math

The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be

*asked by Jenna on December 21, 2016* -
## math

An estimate of the fish population of a certain pond was found by catching 200 fish and marking and returning them to the pond. The next day, 300 fish were caught, of which 50 had been marked the previous day. Estimate the fish population of the pond.

*asked by kirk on August 12, 2010* -
## data management gr.12

The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be

*asked by Anonymous on December 21, 2016* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## statistics

A sample of 134 golfers showed that their average score on a particular golf course was 87.43 with a standard deviation of 4.53. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 99%

*asked by Valerie on November 2, 2010* -
## statistics

A sample of 106 golfers showed that their average score on a particular golf course was 87.98 with a standard deviation of 5.39. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 90%

*asked by Laynette on September 2, 2011* -
## Statistic

A restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve accounts is selected, resulting in the sample mean of $220 and a sample standard deviation of $12. The

*asked by Marilyn on October 20, 2008* -
## Math

1. The table shows the number of soccer clubs and the population densities of different cities in a state. City Pop. per square mile Clubs 1 160 6 2 173 8 3 254 7 4 284 11 5 315 9 6 322 10 7 459 14 8 487 20 Based on this information, which statement is

*asked by BTSislife on March 8, 2019* -
## Statistics

The USDA size standards for eggs are based on weight and are as follows: SMALL: greater than 43 grams, less than 50 grams MEDIUM: greater than 50 grams, less than 57 grams LARGE: greater than 57 grams, less than 64 grams EXTRA LARGE: greater than 64 grams,

*asked by Ion on March 4, 2010* -
## Math check

While writing an article on the high cost of college education, a reporter took a random sample of the cost of new textbooks for a semester. The random variable x is the cost of one book. Her sample data can be summarized by the following. (Give your

*asked by TOM95 on June 19, 2013* -
## Epidemiology

Can someone please check this for me to see if I am on the right track thanks? In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for one year. All lung cancer deaths were ascertained and the

*asked by DANIELLE on April 12, 2008* -
## Statistics

Do you drink the recommended amount of water each day? Most Americans don't! On average, Americans drink 5.4 eight-oz servings of water a day. A sample of 36 education professionals was randomly selected and their water consumption for a 24-hour period was

*asked by needhelp on July 23, 2014* -
## Statistics

Can anyone help me with this? Which of the following statements is true about a 99% confidence interval? a. The interval contains 99% of the population. b. The probability that the population mean is in the interval is 99%. c. The interval is wider than a

*asked by Angel on October 7, 2016* -
## statistics

The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 48 lasted more than 1000 hours. Find the point estimate for the population proportion,

*asked by looking for someone to varify my work please on April 6, 2010* -
## Finance

You are considering buying 100 shares of TEXAS INC common stock. The common stock is expected to pay a dividend of $2.50 a year from today; the growth rate of the dividends is 8% for two years, then level off to a constant rate of 5% per year. The

*asked by Sally on June 14, 2013* -
## math

A native wolf species has been reintroduced into a national forest. Originally 200 wolves were transplanted. After 3 years, the population had grown to 270 wolves. If the population grows exponentially, a. Write a recursive formula for the number of wolves

*asked by Anonymous on July 18, 2012* -
## statistics

from generation to generation, the average age when smokers first start to smoke caties. however, the standatd deviation of that age remains constant of around 2.1 years. a survey of 40 smokers of this generation was done to see if the average starting age

*asked by ed on March 20, 2012* -
## statistics

You randomly choose 16 unfurnished one-bedroom apartments from a large number of advertisements in your local newspaper. You calculate that their mean monthly rent is $613 and their standard deviation is $96. Does this SRS give good reason to believe that

*asked by arshi on November 19, 2013* -
## Statistics (38)

Many drugs used to treat cancer are expensive. BusinessWeek reported on the cost per treatment of Herceptin, a drug used to treat breast cancer (BusinessWeek, January 30, 2006). Typical treatment costs (in dollars) for Herceptin are provided by a simple

*asked by Mia on May 6, 2014* -
## Math/Statistics

STATISTICS PLEASE HELP!!!!! I am sorry this is jy second time posting, but I really need help. I have tried contacting my teacher and classmates with no luck. Please just steer me in the right direction!: Suppose cars arrive at Burger King's drive-through

*asked by Jake on October 22, 2011* -
## Finance question

Suppose CAPM is true. You are considering investing in an equally weighted portfolio of two stocks, A and B. The betas of these stocks to the market factor are 1.10 and 0.80, respectively. The total return volatilities of stocks A and B are σA=0.20 and

*asked by jerick on September 15, 2013* -
## Probability/Distribution

A catalyst researcher states that the diameters (in microns) of the pores in a new product catalyst she has made have an exponential distribution with parameter ë = 0.25 (35 pts). (a) Determine the mean pore size. (b) Determine the standard deviation of

*asked by Erica on October 11, 2016* -
## history SUE HELP MEEEE

Which of the following correctly describes an example of how climate affected the settlement of countries in North America? Most of the people in the United States settled in the Midwest, where temperatures are less extreme.*** Most of Canada’s

*asked by PLS HELP ME on February 19, 2016* -
## chemistry

Using the given data, and the table of Standard Reduction Potentials, find the standard reduction potential for this half reaction: 8H^+ + BaCrO4(s) + 3e- -> Ba^2+ + Cr^3+ + 4H2O(l) given: Ksp (BaCrO4)=2.1E-10 DeltaGf* (kJ/mol): CrO4^2- (-727.75), Cr2O7^2-

*asked by kellie on August 2, 2012* -
## US History II

What was the Gold Standard in William Jennings Bryan v. William McKinley? - that gold was only standard to redeem paper money. What does this mean? Thank You.

*asked by Amy~ on August 14, 2010* -
## math

Convert: 4600 bushel corn at standard moisture to ___tons What does standard moisture mean? Convert: 10 psfito ___ oz/in^2

*asked by Nabil on March 30, 2012* -
## Algebra II

1. Which represents the type of sequence: 33, 31, 28, 24, 19,... option a. option b. option c. option d. 2. A town has a population of 32,000 in the year 2002; 38,400 in the year 2003; 46,080 in the year 2004; and 55,296 in the year 2005. If this pattern

*asked by 1234White5678 on April 6, 2016* -
## statistics

A maker has the opportunity to purchase several acres of land that is divided up into several lots for building single-family homes. It is known that the average sale price of all of the lots is $80,000 and the standard deviation of the sale price is

*asked by Ronnie on May 16, 2008* -
## science

1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some

*asked by kayla help plzz on October 6, 2015* -
## Chemistry

The standard free energy of activation of a reaction A is 88.6 kJ mol–1 (21.2 kcal mol–1) at 298 K. Reaction B is one hundred million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ mol–1 (2.39 kcal

*asked by Anonymous on November 25, 2012* -
## Statistics

I don't understand this at all.. Assume that the weights of Chinook Salmon in the Columbia River are normally distributed. You randomly catch and weigh 40 such salmon. The mean weight from your sample is 24.1 pounds with a standard deviation of 3.5 pounds.

*asked by Kiki on November 23, 2017* -
## physics

Suppose you need to measure the mass of an object, but have only a 7-kg standard mass and a meter stick. Place a knife edge under the 50-cm mark of the meter stick. Then put the 7-kg standard mass at the 39.1-cm mark and place the object so as to balance

*asked by Sami on November 3, 2011* -
## Science

1.)When evaluation was first processed which of the following was used as evidence to suport the idea (1 point) a.)observations of nature**** b.)laboratory experiments c.)extensive fossil collections b.)genetic sequence 2.)a farmer sprays insecticide on

*asked by Hannah on October 2, 2014* -
## statistics

Using the 68-95-99.7 rule: 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: Suggest you make a drawing and label first… a. (0.1 point)

*asked by Rose on May 10, 2010* -
## algebra

A biologist took a count of the number of migrating waterfowl at a particular lake, and recounted the lakes population of waterfowl on each of the next six weeks. Find the function that models the data as a function of x, the number of weekx. Use the model

*asked by LEE on October 25, 2012* -
## statistics

The average amount of time people spend on facebook each day is 71 minutes, with a standard deviation of 4.7 minutes. Are you more likely to select a random person that spends less than 68 minutes per day, or a group of 35 people that spend on average less

*asked by ME on November 17, 2012* -
## math

The distriubution of the SAT scores in math for an incoming class of business students has a mean of 580 and standard deviation of 25. Assume that the scores are normally distributed. a. Find the probability that an individual's SAT score is less that 550.

*asked by sri on July 20, 2014* -
## Statistics

The following data gives the amount of time (in minutes), it took a sample of 16 patients with hypertension to achieve their target heart rate during a zumba exercise dance class. 5, 5, 7, 7, 8, 9, 10, 10, 10, 12, 12, 12, 12, 13, 14, 14 Use this data to

*asked by Jen on April 22, 2019* -
## chemistry

A method for scrubbing CO2(g) from the air on a spacecraft is to allow CO2(g) to react with NaOH according to the following (unbalanced reaction). NaOH(s) + CO2(g) → Na2CO3(s) + H2O(l) Use the appropriate thermodynamic tables to calculate the enthalpy,

*asked by Boris on February 3, 2015* -
## science

1. which of the following must occur for speciation to take place? a. a population must be physically separated into groups b. harsh environmental conditions must be imposed on a population c. competition must occur between members of a populations d. some

*asked by kayla help plzz on October 5, 2015* -
## Algebra HELP!

An estimate of the frog population in a certain pond was found by catching 30 frogs, marking them, and returning them to the pond. The next day, 50 frogs were caught, of which 14 had been marked the previous day. Estimate the frog population of the pond.

*asked by Ashley on November 12, 2014* -
## biology

In a pre-lab for nutrient food testing , I was assigned to answer these questions, but I have no idea what they are talking about. And no, we have not discusses the answers in class. Here are the questions: Answer the following questions: 1. What is a

*asked by Kayla on September 26, 2017* -
## Help please? Math 141 (Pre-Cal)

The number of Sasquatch living t years after 2016 is given by the formula s(t)=(51t+84)/(3t+28). -What value does the Sasquatch population approach in the long run? When will the population (rounded to the nearest Sasquatch) reach this value? (This vale

*asked by Gio on February 16, 2016* -
## math(epidemiology)

A population of 100 healthy men was followed for the development of prostate cancer. After being followed for 5 years, 20 men developed prostate cancer. Ten other men were followed for 1 year and then were lost to follow-up. The remaining men who never

*asked by Kelly on January 18, 2016* -
## Math

A herd of 100 deer is introduced onto a small island. At first the herd increases rapidly, but eventually food resources dwindle and the population declines. Suppose the number of deer, N(t), after t years is described by the polynomial function: N(t)+

*asked by Dina on October 16, 2015* -
## STAT

Airline overbooking is a common practice. Many people make reservations on several flights due to uncertain plans and then cancel at the last minute or simply fail to show up. Eagle Air is small commuter airline. Their planes hold only 25 people. Past

*asked by Michelle on May 1, 2012* -
## Statistics

The weight of adult green sea urchins are normally distributed with a mean 52g and standard deviation 17.2g? A. Find the percentage of adult green sea urchins with weighs between 50g and 60g My answer/work: normalcdf (50, 60, 52, 17.2) = .225, 23% B.

*asked by Anonymous on March 19, 2013* -
## Statistics

Susan is a sales representative who has a history of making a successful sale from about 67% of her sales contacts. If she makes 12 successful sales this week, Susan will get a bonus. Let n be a random variable representing the number of contacts needed

*asked by Tamia on March 10, 2019* -
## Math-Statistics

Susan is a sales representative who has a history of making a successful sale from about 67% of her sales contacts. If she makes 12 successful sales this week, Susan will get a bonus. Let n be a random variable representing the number of contacts

*asked by Tamia on February 25, 2019* -
## Economics

The chapter states that the elderly population in the United States is growing more rapidly than the total population. In particular, the number of workers is rising slowly, while the number of retirees is rising quickly. Concerned about the future of

*asked by Mariah on November 17, 2006* -
## Math, statistics

Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) = {1/3,0,if −2

*asked by R on March 31, 2015* -
## statistics

The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg with a standard deviation of 20 mg. (a) What is the probability that a randomly chosen cup of home-brewed coffee will have more than 130 mg

*asked by Alejandra on October 24, 2010* -
## statistics

A drug is essential to the profileration of lymphocytes can cause kidney damage in 1% of patients. If the drug is given to 30 patients, find: A)the probability exactly 1 patient suffers kidnay damage B)the probabaility that less than 2 patients suffer

*asked by lauren on February 17, 2008* -
## geography

what is the population of the state nevada Thank you for using the Jiskha Homework Help Forum. Here is a site with the population of 2005. If you can find a more current Atlas, you might find a more current number:

*asked by Sifa on March 8, 2007* -
## Statistics

Cigarette companies advertise that the mean amount of nicotine in each cigarette is 1.4 milligrams. A health advocacy group believes that the amount of nicotine is greater than the advertised amount. They hire a consultant who collects a sample of size 31

*asked by Maria Elizabeth on December 9, 2012* -
## Algebra 2

A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes. On average, when surveyed regarding job satisfaction,

*asked by Jasmine on December 9, 2014* -
## equilibrium concentration

A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ? M. Wouldn't that be 0.002 x 1/11 = ??

*asked by Christine on April 4, 2007* -
## Chemistry

A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be__?__M

*asked by UN on June 28, 2008* -
## chemistry

I need to do this question but um unable to draw the enthalpy cycle please help me. The standard enthalpy of combustion of C3H7OH(l), C(s,graphite) and H2(g) are -1300,-393, and -286 kJmol-1. Calculate the standard enthalpy of formation of C3H7OH(l)

*asked by isu on February 4, 2015* -
## Math - Probability

I want to know that if 1 person in 50 has one blue eye and one green and you have 700 people living in an area in groups of four. What is the probability that three of those people would end up together? Would it be greater or less of one of those people

*asked by Stacey on December 15, 2006* -
## chemistry

A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ____ M.

*asked by Gloria on April 10, 2008* -
## statistics

The distance travelled in a week by sales staff employed by a nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. a) less than 80 miles, b) more than 250 miles, c) between 100 and 300

*asked by Joshua on April 23, 2017*

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