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ELEMENTARY STATISTICS Section 002 Summer Semester 2025 QUESTION #1 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 308 community college students at random and finds that 115 of them have a smart phone. In testing the hypotheses: H0: p = 0.33 versus Ha: p < 0.33 Do the hypothesis test. Use a level of significance of $\alpha = 0.05$. Use the unrounded values in Excel to find the answers for #3 and #4. 1. This is an example of a [dropdown] hypothesis test. 2. Find the standard error. 3. Find the z value. 4. Find the p-value. 5. The communication professor should [dropdown] the null hypothesis.

Name: elementary statistics section 002 summer semester 2025 question 1 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 22296
Uploaded: 2022-11-15T17:19:18-08:00
Duration: 1 min 38 s
Channel: Sri K
Description: elementary statistics section 002 summer semester 2025 question 1 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 22296

          ELEMENTARY STATISTICS Section 002 Summer Semester 2025
QUESTION #1
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 308 community college students at random and finds that 115 of them have a smart phone. In testing the hypotheses:
H0: p = 0.33 versus
Ha: p < 0.33
Do the hypothesis test. Use a level of significance of $\alpha = 0.05$.
Use the unrounded values in Excel to find the answers for #3 and #4.
1. This is an example of a [dropdown] hypothesis test.
2. Find the standard error.
3. Find the z value.
4. Find the p-value.
5. The communication professor should [dropdown] the null hypothesis.

elementary statistics section 002 summer semester 2025 question 1 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 22296

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