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 higher among community college students. She selects 358 community college students at random and finds that 141 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.
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 higher among community college students. She selects 358 community college students at random and finds that 141 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.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Transcribed Image Text: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 higher among community
college students. She selects 358 community college students at random and finds that 141 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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