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StatisticsQ&A LibraryA researcher has heard that the average wind speed in a certain city is 8 miles per hour. He wants to see whether it is different. A random sample of 32 days has an average wind speed of 8.2 miles per hour. Suppose the population standard deviation is 0.6 mile per hour. At α=0.05, is there enough evidence to reject the claim? Use p-value to take the decision. Construct a 92% interval estimate for the average wind speed of the city. What is the probability of being able to statistically determine a true change in the wind speed of magnitude 1.5 in either direction?Start your trial now! First week only $4.99!*arrow_forward*

Question

A researcher has heard that the average wind speed in a certain city is 8 miles per hour. He wants to see whether it is different. A random sample of 32 days has an average wind speed of 8.2 miles per hour. Suppose the population standard deviation is 0.6 mile per hour. At α=0.05, is there enough evidence to reject the claim? Use p-value to take the decision.

Construct a 92% interval estimate for the average wind speed of the city.

What is the probability of being able to statistically determine a true change in the wind speed of magnitude 1.5 in either direction?

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