Test 2 Review 2 Winter 2019.docx - Review 2 u2013 Test 2 1...

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Review 2 – Test 21) A major home improvement store conducted its biggest brand recognition campaign in the company's history. A series of new television advertisements featuring well-known entertainers and sports figures were launched. A key metric for the success of television advertisements is theproportion of viewers who "like the ads a lot". A study of 1,189 adults who viewed the ads reported that 230 indicated that they "like the ads a lot." The percentage of a typical television advertisement receiving the "like the ads a lot" score is believed to be 22%. Company officials wanted to know if there is evidence that the series of television advertisements are less successful than the typical ad at a 0.01 level of significance.a)What are the hypotheses for this test?
)b)What is the test statistics and the p-value?
c) What is/are the critical value(s)?
d) What is a non-technical concluding statement (managerial conclusion)? (There is no evidence
2) An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. A consumer group has decided to try to discover if the claim appears true. They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W with a standard deviation of 15 W. Test the claim at 0.01 level of significance.
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