A marketing manager for a cell phone company claims that more than 52% of children aged 8−12 have cell phones. In a survey of 1805 children aged 8−12 by the National Consumers League, 971 of
them had cell phones.
a. State the appropriate null and alternate hypotheses.
b. Compute the test statistic.
c. What is the p-value for the test?
d. Using α = 0.05, can you conclude that the manager’s claim is true?
e. Using α = 0.1, can you conclude that the manager’s claim is true?