MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:According to a Pew Research Center study, in May 2011, 33% of all American adults had a smartphone (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 320 community college students at random and finds that 135 of them have a smartphone. In testing the hypotheses:
Ho: p = 0.33 versus
Ha: p > 0.33
Do the hypothesis test. Use a level of significance of α = 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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