# 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 48
1. ## statistics

At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. If a random sample of 15 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between

asked by Cindy on October 22, 2010
2. ## Stats

Suppose a Normal model describes the fuel efficiency of cars currently registered in your state. The mean is 27 mpg, with a standard deviation of 4 mpg. Describe the mileage of the most efficient 3% of all cars. a. greater than 24.9 mpg b. greater than

asked by Ali on July 29, 2016
3. ## Algebra word problem

In 2004, the population of Mexico was 106.5 million. If Mexico's population continues to grow at an annual rate of 1.43%, then the population in 2015 will be 106.5 (1.0143)^11 million. a. find the predicted population in 2015 to the nearest tenth of a

asked by Nik on July 30, 2007
4. ## algebra homework check

The monthly rents for the apartments in a Business building are listed below. \$425, \$550, \$550, \$550, \$650, \$650, \$650, \$650, \$800, \$900 Part A: Find the mean\$637.50 median=\$650 mode=\$650 range=\$475 and standard deviation of the rents???

asked by jenny on May 25, 2012
5. ## statistics

A sample of 106 students, the researchers reported the following statistics...mean= 13.2 s=19.5 Explain why the distribution for these 106 students cannot be symmetric and given this, what % of 106 students fall within the x+/-2s? I understand it cannot be

asked by helpthedumbie on September 13, 2013
6. ## college statistics

the math SAT scores for all students who applied to the school of engineering are normally distributed with M=629 and standard deviation of 60. the school of engineering has decided to accept those students whose scores fall in the top 15%. what is th

asked by Chelsea on November 6, 2014
7. ## Math

For a binomial distribution with n=20 trials and probability of success p=.05, we let r= number of successes out of 20 trials. Use the normal approximation to estimate P(6

asked by Leanne on January 21, 2013
8. ## statistics

Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution?

asked by michelle on December 6, 2012
9. ## Statistics

A recent study of US children under 11 years old found that they spend on average 142 minutes a day watching tv. Assuming normal distribution with the standard deviation of 44 minutes, answer the following. A) what percent of children of this age spends

asked by Junior on November 30, 2014
10. ## Statistics

Assume the wait time to see a cardiologist at a certain clinic are uniformly distributed between 7 minutes and 23 minutes. Calculate the probability a randomly selected patient waits at least 18 minutes to see the cardiologist. The random variable, Z, is

asked by Bill on March 26, 2013
11. ## Statistics

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours

asked by Michael on January 12, 2015
12. ## statistics

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

13. ## stats

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours? A) About 25% B) About 50% C) About 75% D) About 68%

asked by Joan on August 31, 2014
14. ## math

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

asked by Bridget on April 2, 2012
15. ## Statistics 1

If light bulbs are normally distributed with a mean of 2500 hrs. and a standard deviation of 500 hrs. what percentage of light bulbs have a life span less than 2500 hrs.?

asked by Tom gordy on May 30, 2014
16. ## Math

The heights of Japanese maple trees are normally distributed with a mean of 6 meters and a standard deviation of 0.2 meter. What percent of Japanese maple trees are between 5.5 meters and 6.7 meters tall?

asked by Joe on May 25, 2016
17. ## pre calc

population of city has varied considederably in recent years. the data it the relates the pollution P to time t, in years, where t=0 correponds to 1990. use a quadratic function fitted to the data to predict the population in 2000 data: year,t population P

asked by wally on October 22, 2014
18. ## Trig

A population of animals oscillates annually from a low of 1300 on January 1st to a high of 2200 on July 1st, and back to a low of 1300 on the following January. Assume that the population is well-approximated by a sine or a cosine function. a. Find a

asked by Alex on December 3, 2012
19. ## geography

population of wales Check this site for the population of Wales plus a lot of additional information about this part of the United Kingdom. http://worldatlas.com/webimage/countrys/europe/ukw.htm

asked by dan on October 9, 2006
20. ## Science

1> Family spending in Newton Housing 44% food 21% transportation 14% clothing 6% medical 5% ther 10% So what amount is nearly half of all spending? 2> In which year was the world population 2 billion? 3> What is the population accepted to be in 2012?

asked by ALisha on September 15, 2008
21. ## algebra

Suppose a population of bacteria in a Petri dish has a doubling time of 6 hours. How long will it take for an initial population of 11000 bacteria to reach 20500? Round your answer to two decimal places.

asked by mat on April 9, 2016
22. ## Algebra

Suppose a population of bacteria in a Petri dish has a doubling time of 6 hours. How long will it take for an initial population of 11000 bacteria to reach 20000? Round your answer to two decimal places.

asked by Tim on October 10, 2015

Damon had answer, but i just want to see if you'll explain it differently... The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

asked by Nina on November 17, 2012
24. ## statistics

a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 5 percent of the time. what amont should you set as the mean

asked by stephanie on February 10, 2013
25. ## Statistics

T-Test The article “Does Smoking Cessation Lead to Weight Gain?” described an experiment in which 322 subjects, selected at random from those show successfully participated in a program to quit smoking were weighed at the beginning of the program and

asked by Peter on March 18, 2010
26. ## Statistics

Scores on a mathematics examination appear to follow a normal distribution with mean of 65 and standard deviation of 15. The instructor wishes to give a grade of “C” to students scoring between the 60th and 70th percentiles on the exam. What score

asked by Austin on May 26, 2013
27. ## Statistics

Scores on a mathematics examination appear to follow a normal distribution with mean of 65 and standard deviation of 15. The instructor wishes to give a grade of “C” to students scoring between the 60th and 70th percentiles on the exam. What score

asked by Jimmy Smith on May 25, 2013
28. ## statistics

According to a website about salaries, the national average salary as of October 2003 for a human resources clerk was \$29,932. We assume that the annual salaries for clerks are normally distributed with a standard deviation of \$1,860. (Give your answers

asked by holly on July 7, 2012

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate.

asked by Rani on October 6, 2009
30. ## statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is \$47,000. A random sample of 30 of the firm’s programmers has a mean salary of \$46,500 with a

asked by Shawnie on June 14, 2011
31. ## statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is \$47,000. A random sample of 30 of the firm’s programmers has a mean salary of \$46,500 with a

asked by Eric on June 6, 2011
32. ## Statistics

Employees in a large computer firm claim that the mean salary of the firm’s programmers is less than that of its competitors. The competitor’s salary is \$47,000. A random sample of 30 of the firm’s programmers has a mean salary of \$46,500 with a

asked by Kelly on June 7, 2011

A nursing professor was curious as to whether the students in a very large class she was teaching who turned in their tests first scored differently from the overall mean on the test. The overall mean score on the test was 75 with a standard deviation of

asked by Anonymous on July 3, 2013

store manager is doing a study on how to staff his franchise. He knows that the average number of pizzas ordered is 12 per hour with a standard deviation of 1.4 pizzas. Staffed with 3 employees, he can assemble up to 15 pizzas per hour. If his store is

asked by ty on February 18, 2012
35. ## Statistics

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

asked by Joy on January 22, 2012
36. ## science

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

asked by Joy on January 22, 2012
37. ## General question

what is marginalized population? I am to write what the marginalized population a scenario that is given and I am not understanding what is exactly being asked could someone explain?

asked by Anonymous on June 11, 2008
38. ## math

A country seen its population grow each year than 1/8 it was last year. At that time the population will have doubled and tripled

asked by Dany on June 10, 2014
39. ## math

population increasing at rate of 5% per year current population 7,000,000 what will it be in 12years

asked by Anonymous on May 10, 2015
40. ## Maths

Population of a village in certain year is 5837.it become 8796 after two years .What is the increase of population in those years

asked by Anonymous on July 10, 2018
41. ## statistics

Provide the Z score and the critical value. Raw score of 112, population mean 89, Std. of the population (22.8)

asked by lisa on February 10, 2014
42. ## Math

Initial population of a town is 18,691 and it has a doubling time of 15 years. What will the population be in 4 years?

asked by Clare on December 14, 2013
43. ## teas test

a population decreases from 404 million to 288 million. what is the percent decrease of the population?

asked by ava on February 4, 2014
44. ## Statistics

1. A simple random sample of FICO credit rating scores is listed below: 714 751 664 789 818 779 698 836 753 834 693 802 a. Find range, variance, and standard deviation. b. As of this writing, the mean FICO score was reported to be 678. Based on these

asked by Shannon on October 5, 2013
45. ## Chemsitry

Which of the following is NOT true about the thermodynamic standard state? A. A solid is in its standard state when the atmospheric pressure is 1.00 atm and the temperature is 25C. B. An aqueous solution is in its standard state at a concentration of 1.00

asked by Anonymous on February 25, 2008
46. ## chemistry

Which of the following is NOT true about the thermodynamic standard state? A. A gas is in its standard state when its pressure is 1.00 atm and its temperature is 25C . B. An aqueous solution is in its standard state at a concentration of 1.00 M. C. A solid

asked by jina on February 20, 2008
47. ## chemistry

Which of the following is NOT true about the thermodynamic standard state? A. A pure liquid is in its standard state at 25C and a vapor pressure of 1.00 atm. B. An aqueous solution is in its standard state at a concentration of 1.00 M. C. A gas is in its

asked by jeff on May 17, 2009
48. ## statistics

a random sample of 80 college students was selected to participate in a experiment. the mean of the sample is 317 points, the standard deviation of 37 there are 310 students that didn't complete the experiment 1. compute the appropriate test statistic? 2.

asked by Anonymous on July 11, 2012
49. ## math

A study conducted by a TV station showed the number of televisions per household and the corresponding probabilities for ecach. Find the mean, variance, and standard deviation. (in table) Number of televisions 1 2 3 4 Probability P(X) 0.32 0.51 0.12 0.05

asked by Lesley on April 10, 2013
50. ## Statistics

The amount of soda a dispensing machine pours into a 12 ounce can of soda follows a normal distribution with a standard deviation of 0.12 ounces. Every can that has more than 12.30 ounces of soda poured into it causes a spill and the can needs to go

asked by Allison on December 7, 2012
51. ## Probability

Assume that each month the average Canadian household generates an average of 13kg of newspaper for garbage or recycling with a standard deviation of 1kg. What is the probability that a randomly selected household generates between 12 and 15 kg of

asked by Odette on February 9, 2010
52. ## Math

A small country consists of seven states; there are 189 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown, State A: 1283 State B: 2374 State C: 2725 State D: 2155 State E: 1592 State F:

asked by Catherine on March 27, 2017
53. ## Social Studies

During the cold war, the soviet union and the democracies in the west competerd for influrence in the middle east beacuse of its 1. strategic location and valuable resources. 2. vast fertile farmlands and rivers 3. large well-educated population 4.

asked by Edward on April 18, 2007
54. ## statistic

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the Red barn model. Assume the assembley

asked by savon on July 28, 2008
55. ## Stats

Cans of regular Coke are labeled as containing 12. Statistics students weighted the content of 10 randomly chosen cans, and found the mean weight to be 12.1. Assume that cans of Coke are filled so that the actual amounts are normally distributed with a

asked by S on October 20, 2012
56. ## Math

A sample of 120 bags of potatoes produced by a factory was found to have a mean weight of 2.47 kg and a standard deviation of 0.12 kg. Obtain a 95% confidence interval for the mean weight of all bags of potatoes produced by the factory.

asked by Grace on October 24, 2016
57. ## statistics

the amount of pyridoxine in grams per multiple vitamin is normally distributed with mean = 110 grams and standard deviation = 25 grams. What is the probability that a randomly selected vitamin will contain between 100 and 110 grams of pyridoxine?

asked by james on June 3, 2016
58. ## statistics

Suppose that the ages of students at a particular university average 26 years with a standard deviation of 2.8 years. Consider the sampling distribution of the sample mean age of students in a sample of n = 49. The mean of the sampling distribution is

asked by Taylor on July 9, 2014
59. ## Stats

The GRE has a combined verbal and quantitative mean of 1000 and standard deviation of 200. Scores range from 200 to 1600. a. what % of the persons score above 1300? b. above 800? c. below 1200? d. above what score do the top 20% of the test-takers score?

asked by Terry on April 17, 2016
60. ## Statistics

A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. The desired length of the insulation is 12 ft. It is known that the standard deviation in the cutting length is 0.15 ft. A sample of 70 ut

asked by Student on August 10, 2008
61. ## Statistics

An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was \$275.66 with a standard deviation of \$78.11. (a) At the 5 percent level of

asked by Robert on June 6, 2010
62. ## Stats

An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was \$275.66 with a standard deviation of \$78.11. (a) At the 5 percent level of

asked by Sami on November 3, 2010
63. ## math

The population of a slow growing bacterial culture can be represented by the function P(t)=t^2-0.7t+10, where t is measured in seconds. a) Determine the populations of bacteria at 2.5 seconds. b) Determine the average rate of change in the bacteria

asked by Anonymous on February 2, 2013
64. ## Data Analysis

A firm produces batteries that have a lifetime which is normally distributed with a mean of 360 minutes and a standard deviation of 30 minutes. The firm needs to keep an eye on the production process to ensure that everything is working properly and that

asked by Sam on April 23, 2016
65. ## Statistics

A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 12 hours, with a standard deviation of 3 hours. It is desired to estimate the mean viewing time

asked by Shyra on December 2, 2010
66. ## statistics

According to the Census Bureau's 2002 American Community Survey, the average travel time to work of workers 16 years and over living in Boston, MA, who did not work at home, was 28.2 minutes with a standard deviation of 0.79 minutes. A sample of 35 commute

asked by ali awan on May 7, 2013
67. ## statistics

According to the Census Bureau's 2002 American Community Survey, the average travel time to work of workers 16 years and over living in Boston, MA, who did not work at home, was 28.2 minutes with a standard deviation of 0.79 minutes. A sample of 35 commute

asked by ali awan on May 8, 2013
68. ## statistics

This is what my teacher gave us I guess he want us to figture out the question. cost/mile 0.08 normal distribution means=.08 standard deviation=0.2 Car life 5 uniform distribution( minmun=2, max=8 annual milage =900 triangular distribution(min=3700 most

asked by elizabeth6 on July 13, 2011
69. ## MATH,statistics

At a recent scotch-tasting party, 20 faculty members and their (opposite sex) spouses were guzzling it back pretty well. One person quite correctly noticed that the women seemed to be drinking more than the men. If the mean number of drinks had by the men

asked by Tanya on November 2, 2012
70. ## Statistic

Final averages are typically approximately normally distributed with a mean of 78 and a standard deviation of 11. Your professor says that the top 6% of the class will receive an A; the next 24%, a B; the next 41%, a C; the next 18%, a D; and the bottom

asked by Bibi on September 26, 2012
71. ## Math 115 Ch 8

Compare the population per square mile in Asia to the population per square mile in North America for the year 2000. North America: land area(1,000mi squared)9,400 Population 305000000 Asia: land area (1,000mi squared) 17,400 population 4,028,000,000

asked by Debbie on December 6, 2008
72. ## statistics

Listed below are the duration's (in hours) of a simple random sample of all flights of a space shuttle program. Find the range, variance, and standard deviation for the sample data. Is the lowest duration time unusual? Why or why not? 71, 100, 237, 199,

asked by slomo on February 13, 2015
73. ## intro to statistics

a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 1 percent of the time. what among should you set as the mean

asked by jennifer on October 29, 2008
74. ## Statistics

I dont' really understand this question. The construction industry has determined that the average time to construct a two floor, family house in Westchester County, New York takes 85 days -- with a deviation of 10 days. Mr. Cox wants to purchase a new

asked by Ediese on October 7, 2006
75. ## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

asked by jilla on July 7, 2012
76. ## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.1 years of age. If the standard deviation is assumed to be 4.6 years, find the probability that a random sample of 34 U.S. women would

asked by Kay on March 5, 2013
77. ## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

asked by jennifer on July 7, 2012
78. ## Statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.9 years of age. If the standard deviation is assumed to be 4.3 years, find the probability that a random sample of 32 U.S. women would

asked by Casey on October 7, 2013
79. ## MTH233/statistics UOP

Please complete the following 5-step hypothesis testing procedure in your Learning Teams: A simple random sample of forty 20-oz bottles of Coke® from a normal distribution is obtained and each bottle is measured for number of ounces of Coke® in the

asked by sue on July 31, 2010
80. ## statistics

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 25.6 years of age. If the standard deviation is assumed to be 4.1 years, find the probability that a random sample of 30 U.S. women would

asked by statistics student on October 4, 2013
81. ## STATISTICS

An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years of age. If the standard deviation is assumed to be 4.9 years, find the probability that a random sample of 33 U.S. women would

82. ## biology

In a natural population of outbreeding plants, the variance of the total number of seeds per plant is 16. From the natural population, 20 plants are taken into the laboratory and developed into separate true-breeding lines by self-fertilization—with

asked by John on April 23, 2013
83. ## statistics

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). a. If you have a body temperature of 99.00 °F, what is your

asked by sweet on August 16, 2010
84. ## Statistics

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). a. If you have a body temperature of 99.00 °F, what is your

asked by Sasha on April 19, 2010
85. ## statitics

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). a. If you have a body temperature of 99.00 °F, what is your

asked by ann on August 20, 2011

2. Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). a. If you have a body temperature of 99.00 °F, what is

asked by Anonymous on June 15, 2010
87. ## Statistics

A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic Group

asked by Ken on October 16, 2009
88. ## Statistic

At peak periods 15 of attempted logins to an email service fail. log-in attempts are independent and each has the name probability of failing. Ann logs in repeatedly until she succeeds A. Find the probability that Ann needs to log in atleast four times

asked by Eric on April 11, 2017
89. ## statistics

6. A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic

asked by Anonymous on May 2, 2010
90. ## Stats Repost

Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite subject. In this year's class, however, only 21 out of 32 students named math as their favorite class. The teacher decides to conduct a test

asked by Oops on December 17, 2012
91. ## Statistics

Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite subject. In this year's class, however, only 21 out of 32 students named math as their favorite class. The teacher decides to conduct a test

asked by Oops on October 26, 2012
92. ## Statistics

A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic Group

asked by Trey on October 11, 2009
93. ## Spanish

which statement is not true about the people of Colombia? a. Much of the population is concentrated in the Caribbean and Andes region. b. Around 99% of the country speaks Spanish. c. More than half of the population is mestizo. d. There are no longer any

asked by Jamie on September 24, 2018
94. ## Algebra

The town of Appleville recorded the following dates and populations. YEAR POPULATION (in thousands) 1980 51.5 1985 53 1990 56 1995 62 Estimate the approximate population of Appleville in 1988 by finding an equation and then substituting.

asked by TJ on April 22, 2011
95. ## Math

The population of a small Midwestern town is 4500 The population is decreasing at a rate of 1.5% per year. Write an exponential decay function to model this situation. Then find the number of people in the town after 25 years.

asked by M on April 14, 2015
96. ## Pre-Calculus

One model for the population P of bacteria in a sample after t days is given by P(t) = 1000 - 19.75t + 20t² - 1/3t³ Whoops accidently hit post question a)what type of function is P(t) b)when is the bacteria population increasing c) When is it decreasing

asked by Mark on December 29, 2006
97. ## Human Geography-Help!

Where is the largest concentration of people? East Asia If the physiological density is higher than the arithmetic density what can you infer? There's too many people for resources. What stage of the demographic transition has a rapidly delcining crude

asked by Kylie on September 30, 2010
98. ## Algebra word problem help

The average walking speed R of people living in a city of population P,in thousands, is given by R=0.37InP+0.05, where R is in feet per second. a.) The population of Honolulu, Hawaii is 395,790. Find the average walking speed. b.) A city's average walking

asked by Shawn on November 21, 2008
99. ## Word Problem

Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions

asked by Marilyn on September 28, 2008
100. ## Stastics

The UMUC bookstore states the average textbook costs \$119. A randomly selected sample of 26 new textbooks at the UMUC bookstore had a mean price of \$123.45 and sample standard deviation of \$15.23. Use a 0.05 significance level to test the claim that the

asked by Nick on April 26, 2016