Question: In each part, is the statement a valid null hypothesis? If not, explain why not. a. In a sample of students, the mean pulse rate

In each part, is the statement a valid null hypothesis? If not, explain why not.

a. In a sample of students, the mean pulse rate for the men is equal to the mean pulse rate for the women.

b. The average weight of newborn boys is the same as the average weight of newborn girls.

c. The proportion of cars in California that are white is higher than the proportion of cars in Maine that are white.

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