In a recent year a poll asked 2213 random adult citizens of large country how th

Question

In a recent year a poll asked 2213 random adult citizens of large country how they rated economic conditions. In the poll 17 % rated the economy as Excellent Good. A recent media outlet claimed that the percentage of citizens who the economy was in Excellent Good shape was 20%. Does the poll support this claim? a) Test appropriate hypothesis Find a 99% confidence interval for the proportion of adults who rated the economy as Excellent Good Check conditions. b) Does your confidence interval provide evidence to support the claim? c) What is the significance level of the test in b? Explain a) Let p be the proportion of adult citizens who felt the economy was in Excellent Good shape. What are the null and alternative hypotheses for the test? H_0: p = 0.20 vs H_A p notequalto 0.20 H_0: p = 0.17 vs H_A: p > 0.17 H_0: p = 0.17 vs H_A: p

Explanation / Answer

Ans : Option A.

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