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(a) The sample standard deviation was not reported, but suppose that it was 4 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. O Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours.

(a) The sample standard deviation was not reported, but suppose that it was 4 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. O Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours.

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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In a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.8 hours. (a) The sample standard deviation was not reported, but suppose that it was 4 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. O Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. (b) Now suppose that the sample standard deviation was 2 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours.
Transcribed Image Text:In a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.8 hours. (a) The sample standard deviation was not reported, but suppose that it was 4 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. O Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. (b) Now suppose that the sample standard deviation was 2 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater than 12.6 hours. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State the conclusion in the problem context. Reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. Do not reject Ho. We have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours. O Do not reject Ho. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.6 hours.
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