State the null and alternative hypotheses for each of the following situations. (That is, identify the correct number μ0 and write H0: μ=μ0 and the appropriate analogous expression for Ha.)
(5 M)
a. The average July temperature in a region historically has been 74.5°F. Perhaps it is higher now.
b. The average weight of a female airline passenger with luggage was 145 pounds ten years ago. The FAA believes it to be higher now.
c. The average stipend for doctoral students in a particular discipline at a state university is $14,756. The department chairman believes that the national average is higher.
d. The average room rate in hotels in a certain region is $82.53. A travel agent believes that the average in a particular resort area is different.
e. The average farm size in a predominately rural state was 69.4 acres. The secretary of agriculture of that state asserts that it is less today.
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Step-by-step explanation:
H0:μ=74.5vsHa:μ>74.5
H0:μ=145vsHa:μ>145
H0:μ=14756vsHa:μ>14756
H0:μ=82.53vsHa:μ≠82.53
H0:μ=69.4vsHa:μ<69.4
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