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  3. a phone manufacturer wants to compete in the touch screen...

Question: a phone manufacturer wants to compete in the touch screen...

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A phone manufacturer wants to compete In the touch screen phone market. He understands that the lead product has a battery life of Just 5 hours. The manufacturer clalms that whlle the new touch screen phone Is more expenslve, ts battery lfe Is more than twice as long as that of the leading product. In order to test the clalm, a researcher samples 45 unlts of the new phone and finds that the gample battery lfe averages 10.5 hours with a sample standard devlation of 1.8 hours. (You may find It useful to reference the appropriate table: z table or t table) a. Select the relevant null and the alternatlve hypotheses. b-1. Calculate the value of the test statistic. (Round Intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic b-2. Find the p-value. p-value< 001 0.01 s p-value<0.025 0.025 s p-value <0.05 0.05 s p-value < 010 Op-value 010 c. At the 5% significance level, what is the conclusion? Reject Hg:the clalm Is supported by the data. o Reject He; the claim is not supported by the data. Do not rejectg, the clam is supported by the data. o Do not reject Ha, the claim is not supported by the data.

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