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Show all work 7. In a large population of pregnant women, the mean weight gain during pregnancy was u = 32 lbs. with standard deviation

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7. In a large population of pregnant women, the mean weight gain during pregnancy was u = 32 lbs. with standard deviation o=6 1bs. Suppose 64 pregnant women from this population are randomly selected by an obstetrician. The sampling distribution of the sample mean weight gain x is: (3 pts) a. N(32, 6) b. N(32, 0.75) C. N(64, 6) d. N(4, 6)

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