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thes Working with the Concepts bel 9. More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how hours per week they spent on the Internet. The sample Tr many mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per 13 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method? b. Com c. Is Ho rejected at the 0.05 level? Explain. th th b Working with the Concepts Q More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per e) 1 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?

thes Working with the Concepts bel 9. More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how hours per week they spent on the Internet. The sample Tr many mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per 13 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method? b. Com c. Is Ho rejected at the 0.05 level? Explain. th th b Working with the Concepts Q More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per e) 1 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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thes Working with the Concepts bel 9. More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how hours per week they spent on the Internet. The sample Tr many mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per 13 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?
Transcribed Image Text:thes Working with the Concepts bel 9. More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how hours per week they spent on the Internet. The sample Tr many mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per 13 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?
b. Com c. Is Ho rejected at the 0.05 level? Explain. th th b Working with the Concepts Q More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per e) 1 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?
Transcribed Image Text:b. Com c. Is Ho rejected at the 0.05 level? Explain. th th b Working with the Concepts Q More time on the Internet: The General Social Survey polled a sample of 1048 adults in the year 2010, asking them how many hours per week they spent on the Internet. The sample mean was 9.79 with a standard deviation of 13.41. A second sample of 1399 adults was taken in the year 2014. For this sample, the mean was 11.62 with a standard deviation of 15.02. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per e) 1 week spent on the Internet increased between 2010 and 2014? Use the a = 0.05 level. a. State the appropriate null and alternate hypotheses. b. Compute the test statistic. c. How many degrees of freedom are there, using the simple method?
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