According to a Pew Research Center study, in May 2011, 33% of all American adults had asmart phone (one which the user can use to read email and surf the Internet). Acommunications professor at a university believes this percentage is lower among communitycollege students. She selects 357 community college students at random and finds that 129 ofthem have a smart phone. In testing the hypotheses:Ho: p = 0.33 versusHa: p < 0.33Do the hypothesis test. Use a level of significance of a = 0.05;Use the unrounded values in Excel to find the answers for #3 and #4.1. This is an example of ahypothesis test.2. Find the standard error.3. Find the z value. --4. Find the p-value.-5. The communication professor shouldthe null hypothesis.

Given,the hypothesis test for one proportion.To answer the 5 sub-parts.

Answered: 1. This is an example of a 2. Find the…

1. This is an example of a 2. Find the standard error. 3. Find the z value. 4. Find the p-value.[. 5. The communication professor should | hypothesis test. the null hypothesis.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.5: Interpreting Data

Problem 1C

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Question

According to a Pew Research Center study, in May 2011, 33% of all American adults had a
smart phone (one which the user can use to read email and surf the Internet). A
communications professor at a university believes this percentage is lower among community
college students. She selects 357 community college students at random and finds that 129 of
them have a smart phone. In testing the hypotheses:
Ho: p = 0.33 versus
Ha: p < 0.33
Do the hypothesis test. Use a level of significance of a = 0.05;
Use the unrounded values in Excel to find the answers for #3 and #4.
1. This is an example of a
hypothesis test.
2. Find the standard error.
3. Find the z value. --
4. Find the p-value.-
5. The communication professor should
the null hypothesis.

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