Kids with cell phones: A marketing manager for a cell phone company claims that less than 56% of children aged 8-12 have cell phones. In a survey of 816 children aged 8-12 by a national consumers group, 408 of them had cell phones. Can you conclude that the manager's claim is true? Use the alpha =0.01 level of significance and the oritical value m

Question

Kids with cell phones: A marketing manager for a cell phone company claims that less than

56%

of children aged

8-12

have cell phones. In a survey of 816 children aged

8-12

by a national consumers group, 408 of them had cell phones. Can you conclude that the manager's claim is true? Use the

\alpha =0.01

level of significance and the oritical value method with the table. Part:

(0)/(5)

Part 1 of 5 State the appropriate null and alternate hypotheses.

H_(0)

◻

H_(1)

◻

This hypothesis test is a

◻

(Choose one) test. Part:

(1)/(5)

Part 2 of 5 Find the critical value. Round the answer to three decimal places. For

\alpha =0.01

, the critical value is

◻

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