an investigator wants to prove that = the average weight of passengers flying on

Question

an investigator wants to prove that = the average weight of passengers flying on small planes exceeds the FAA guideline of average total weight of 185 pounds (passenger weight including shoes, clothes, and carry-on). Suppose that a random sample of 51 passengers showed an average total weight of 200 pounds with a sample standard deviation of 59.5 pounds. Assume that passenger total weights are normally distributed.

What are the appropriate null and alternative hypotheses? Select the correct answer from the following graphic:

Explanation / Answer

Given µ=185 n=51 sample mean=200 s=59.5 Given investigator wants to prove that = the average weight of passengers flying on small planes exceeds the FAA guideline of average total weight of 185 pounds So Null Hypothesis is H0:µ=185     Alternative Hypothesis is Ha:µ>185

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