Answered: According to Facebook.com, the mean…

Name: According to Facebook.com, the mean number of community pages, groups,
Uploaded: 2024-03-20T07:07:12.000Z
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Description: According to Facebook.com, the mean number of community pages, groups, and events that users are connected to is 80. A random sample of 120 Facebook users showed a mean of 87 connections to these sites. Assume that the population standard deviation

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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According to Facebook.com, the mean number of community pages, groups, and events that users are connected to is 80. A random sample of 120 Facebook users showed a mean of 87 connections to these sites. Assume that the population standard deviation of the connections is known to be 38. Test at the 5% level of significance whether the population mean number of connections of community pages, groups, and events is 80.

1)What is the appropriate alternative hypothesis?

2)The most appropriate type of test among these is

3)Determine the value of the test statistic.

4)What is the critical (rejection) region using a 5% level of significance?

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