Additional Information and Full Hypothesis Test Examples · Example 5
Suppose a consumer group suspects that the proportion of households that have three cell phones is 30%. A cell phone company has reason to believe that the proportion is not 30%. Before they start a big advertising campaign, they conduct a hypothesis test. Their marketing people survey 150 households with the result that 43 of the households have three cell phones.
a. The value that helps determine the p-value is p′. Calculate p′.
b. What is a success for this problem?
c. What is the level of significance?
d. Draw the graph for this problem. Draw the horizontal axis. Label and shade appropriately.
Calculate the p-value.
e. Make a decision. _____________(Reject/Do not reject) H_0 because____________.
OpenStax, Introductory Statistics 2e · §9.5 Additional Information and Full Hypothesis Test Examples · Example 5
No hints for this one.
Check your full solution
Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.
Your first check today doesn't need an account.
Your photos and PDFs are read once and not stored — only the transcription is kept.