Possible answers :
Reject H0. At the 5% significance level, the test results are not statistically significant and at best, provide weak evidence against the null hypothesis.
Reject H0. At the 5% significance level, the data provide sufficient evidence to conclude that the mean likes per hour of their ad is not equal to 7 likes.
Do not reject H0. At the 5% significance level, the test results are not statistically significant and at best, provide weak evidence against the null hypothesis.
Do not reject H0. At the 5% significance level, the data provide sufficient evidence to conclude that the mean likes per hour of their ad is not equal to 7 likes.
Extracted text: Suppose an ad agency claims that likes per hour of their ad is not equal to 7 likes, on average. Several of their employees do not believe them, so a manager decides to do a hypothesis test, at a 5% significance level, to persuade them. She collects data for 19 hours and works through the testing procedure: 6.2 . α 0.05 (significance level) . The test statistic is 6.2-7 0.9 -3.87 . The critical values are-Z0025 -1.96 and zo.025 1.96 Conclude whether to reject or not reject Ho, and interpret the results.
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