In: Statistics and Probability
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.