STATS 200 Mimi is interested in testing the claim that banana is the favorite fruit

| March 14, 2016

Question
Mimi is interested in testing the claim that banana is the favorite fruit for more than 80% of the adults. She conducted a survey on a random sample of 100 adults. 85 adults in the sample chose banana as his / her favorite fruit.

Assume Mimi wants to use a 0.05 significance level to test the claim.

(a) Identify the null hypothesis and the alternative hypothesis.

(b) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.

(c) Determine the P-value for this test. Show all work; writing the correct P-value, without supporting work, will receive no credit.

(d) Is there sufficient evidence to support the claim that banana is the favorite fruit for more than 80% of the adults? Explain.

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