State the null hypothesis, H_0, and the alternative hypothesis, H_a, that would

Question

State the null hypothesis, H_0, and the alternative hypothesis, H_a, that would be used for a hypothesis test for each of the following statements
The mean age of the youths who hang out at the mall is less than 16 years
The mean height of professional basketball players is greater than 6’6”
The mean elevation drop for ski trail at eastern ski centers it at least 285 feet
The mean diameter of the rivets is no more than 0.375 inches
The mean cholesterol level of male college students is different from 200 mg/dl

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