According to Pew Research Center surveys, 12% of American adults did not own a cell phone in
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According to Pew Research Center surveys, 12% of American adults did not own a cell phone in 2012. Suppose Verizon Wireless would like to test if this percentage has recently changed. A recent random sample of 280 American adults was selected, and it was found that 29 of them did not own a cell phone. Using a = 0.10, answer the following:
a. State the null and alternative hypothesis.
b. Based on this sample, what conclusions can Verizon Wireless make about this population?
c. Determine the p-value for this test and interpret its meaning.
d. Verify your results using PHStat.
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