Question: 1. Newborn weight. A study takes a SRS from a population of full-term infants. The standard deviation of birth weights in this population is 2

1.Newborn weight. A study takes a SRS from a population of full-term infants. The standard deviation of birth weights in this population is 2 pounds. Calculate 95% confidence intervals for for samples in which:

a)n = 81 and mean = 7.0 pounds

b)n = 9 and mean = 7.0 pounds

c)Which sample provides the most precise estimate of the mean birth weight?

d)Interpret the CI you computed in part a).

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