Question

In: Statistics and Probability

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for a sample of 13 men was 40 minutes per day. The standard deviation was 11 minutes per day. The mean listening time for a sample of 12 women was also 40 minutes, but the standard deviation of the sample was 17 minutes. At the 0.02 significance level, can we conclude that there is a difference in the variation in the listening times for men and women? (Round your answer to 3 decimal places.)


The test statistic is  .


Decision:  (Click to select)  Do not reject  Reject  H0:σ21=σ22

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for a sample of 13 men was 30 minutes per day. The standard deviation was 13 minutes per day. The mean listening time for a sample of 11 women was also 30 minutes, but the standard deviation of the sample was 14 minutes. Use a two-tailed...
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for a sample of 8 men was 34 minutes per day. The standard deviation was 19 minutes per day. The mean listening time for a sample of 10 women was also 34 minutes, but the standard deviation of the sample was 7 minutes. Use a two-tailed...
A study was conducted on the number of hours slept by men and women. A sample...
A study was conducted on the number of hours slept by men and women. A sample of 18 men slept an average of 6.1 hours a day with a sample standard deviation of 2.1 hours, whereas a sample of 21 women slept an average of 6.4 hours a day with a sample standard deviation of 1.7 hours. Use a 0.05 significance level to test the claim that the average number of hours that there is a difference between the average...
A study was conducted on the number of minutes spent texting by men and women. A...
A study was conducted on the number of minutes spent texting by men and women. A sample of 20 men spent an average of 82.3 minutes a day texting with a sample standard deviation of 24.7 minutes, whereas a sample of 27 women spent an average of 101.4 minutes a day texting with a sample standard deviation of 27.3 minutes. Use a 0.10 significance level to test the claim that the average number of minutes that men spent texting a...
a. According to a study conducted for Gateway Computers, 60% of men and 70% of women...
a. According to a study conducted for Gateway Computers, 60% of men and 70% of women say that weight is an extremely/very important factor in purchasing a laptop computer. Suppose this survey was conducted using 374 men and 481 women. Do these data show enough evidence to declare that a significantly higher proportion of women than men believe that weight is an extremely/very important factor in purchasing a laptop computer? Use a 5% level of significance. b. Use these data...
(i) The research director of a large oil company conducted a study of the buying habits...
(i) The research director of a large oil company conducted a study of the buying habits of consumers with respect to the amount of gasoline purchased at full-service pumps. The arithmetic mean amount is 11.5 gallons and the median amount is 11.95 litres. The standard deviation of the sample is 4.5 litres. The Pearson's coefficient of skewness can be calculated to be -0.30. (ii) Rainbow Trout, Inc., feeds fingerling trout in special ponds and markets them when they attain a...
A university conducted a study of whether running is healthy for men and women over age...
A university conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 1.9% of the 457 members of a fitness association died. We are interested in the proportion of people over 50 who ran and died in the same eight-year period. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption,...
According to a study conducted for Gateway Computers, 59% of men and 70% of women say...
According to a study conducted for Gateway Computers, 59% of men and 70% of women say that weight is an extremely/very important factor in purchasing a laptop computer. Suppose this survey was conducted using 374 men and 481 women. Do these data show enough evidence to declare that a significantly higher proportion of women than men believe that weight is an extremely/very important factor in purchasing a laptop computer? Use alpha= 0.05. Write the correct R commands for solving this...
1.Are men smarter than women at Private Universities in the United States? A study was conducted,...
1.Are men smarter than women at Private Universities in the United States? A study was conducted, randomly selecting 400 men, and 400 women from different Private Universities across the US, and asking for their GPAs. What is the population of this study? All students enrolled at Private Universities in the world All students enrolled at Universities in the US Female students enrolled at Private Universities in the US All students enrolled at Private Universities in the US unanswered 2.Match each...
Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK...
Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK residents. Below is a data matrix displaying a portion of the data collected in this survey. Note that "£" stands for British Pounds Sterling, "cig" stands for cigarettes, and "N/A" refers to a missing component of the data. sex age marital grossIncome smoke amtWeekends amtWeekdays 1 Female 42 Single Under £2600 Yes 12 cig/day 12 cig/day 2 Male 44 Single £10,400 to £15,600 No...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT