Oli emu edu Testing for a Population Mean Checkpoint A Available now. Due o4/30/

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Oli emu edu Testing for a Population Mean Checkpoint A Available now. Due o4/30/2017 11:59 PM EDT Question 1 According to Facebook's self-reported statistics, the average Facebook user is Select neanneer connected to 8o community pages, groups, and events. For a project, onpoiet a student at Contra Costa College tests the hypothesis that cocstudents will average less than 8o such connections. She posts a survey on her Facebook page. Her sample contains 45 responses. she chooses a 5% level of significance. From her data she calculates a t-test statistic of approximately -1.74 with a P-value of about ovo4. What can she conclude? A. OThe data is statistically significant. In other words, the data do provide enough evidence to conclude that the mean number of Facebook connections to community pages, groups and events of all all coccollege students is less the 8o. B. Nothing. The conditions for use of a t-test not met. She cannot trust that the P-value accurate for this reason. c. oThe data is not statistically significant. In other do not provide enough words, the data evidence to conclude that the mean number of Facebook connections to community pages, groups and events of all coccollege students is less the 8o. Question 2

Explanation / Answer

Question 1:

As the p-value given here is 0.04 < 0.05 which is the level of significance of the test, therefore the test is significant and the null hypothesis could be rejected here at the 5% level of significance.

Therefore A) is the correct answer here. ( enough evidence for the alternate hypothesis )

Question 2:

As the p-value given here is 0.08 > 0.05 which is the level of significance of the test, therefore the test is insignificant and the null hypothesis cannot be rejected here at the 5% level of significance.

Therefore C) is the correct answer here. ( not enough evidence for the alternate hypothesis here )

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