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An office manager believes that the mean amount of time spent by office workers reading and deleting spam emails exceeds 30 minutes per day. He tested the hypothesis H0: μ ≤ 30 versus Ha: μ > 30. If the null hypothesis is rejected, what would be the appropriate conclusion? We conclude that there is insufficient evidence to support the manager's belief. We conclude that there is sufficient evidence to support the manager's belief. No enough information; we should know the sample size. We conclude that there is sufficient evidence to reject the manager's belief.

An office manager believes that the mean amount of time spent by office workers reading and deleting spam emails exceeds 30 minutes per day. He tested the hypothesis H0: μ ≤ 30 versus Ha: μ > 30. If the null hypothesis is rejected, what would be the appropriate conclusion? We conclude that there is insufficient evidence to support the manager's belief. We conclude that there is sufficient evidence to support the manager's belief. No enough information; we should know the sample size. We conclude that there is sufficient evidence to reject the manager's belief.

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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An office manager believes that the mean amount of time spent by office workers reading and deleting spam emails exceeds 30 minutes per day. He tested the hypothesis H0: μ ≤ 30 versus Ha: μ > 30. If the null hypothesis is rejected, what would be the appropriate conclusion?

We conclude that there is insufficient evidence to support the manager's belief.

We conclude that there is sufficient evidence to support the manager's belief.

No enough information; we should know the sample size.

We conclude that there is sufficient evidence to reject the manager's belief.

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