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l. A Gallup poll sampled 1025 people to ask them how long it took them to commute to work each day. The sample mean commute
l. A Gallup poll sampled 1025 people to ask them how long it took them to commute to work each day. The sample mean commute time was 23 minutes with a standard deviation of 1?.5 minutes. A transportation engineer claims that the mean commute time is actually greater than 20 minutes. Do the data provide convincing evidence that supports the engineer's claim? To nd out, you need to perform a hypothesis test by answering:r the following questions. (Use a signicance level of {I = 0.05) a) What are the null and alternate hypotheses? (Use proper symbols) H0: H1: 13) Find the test statistic. {Calculator is OK) c) Find the Pvalue. {Calculator is OK) (1) Based on your answer in pan b or c, make a decision about this hypothesis test. e) Interpret your decision. Do you think the engineer's claim is true based on the data? Use full SCIltCIlCCS
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