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In: Statistics and Probability

A poll asked respondents if they trusted​ energy-efficiency ratings on cars and​ appliances; 506 responded​ yes,...

A poll asked respondents if they trusted​ energy-efficiency ratings on cars and​ appliances; 506 responded​ yes, and 520 responded no.

a. At the 0.10 level of​ significance, use the​ six-step critical value approach to hypothesis testing to try to prove that the percentage of people who trust​ energy-efficiency ratings differs from 50​%.

What is the conclusion when using the critical value approach?

-There is or is not sufficient evidence that the percentage of the people who trust the energy efficiency ratings is less than, greater than, or equal to 50% because the test statistic is or is not in the rejection region.

B)Use the​ five-step p-value approach. Interpret the meaning of the​ p-value.

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Expert Solution

orchestra answered 1 year ago
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