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Using the simple random sample of weights of women from a data? set, we obtain these...

Using the simple random sample of weights of women from a data? set, we obtain these sample? statistics: n=45 and x over bar equals 141.67 lb. Research from other sources suggests that the population of weights of women has a standard deviation given by sigma equals 30.84 lbs.

a. Find the best point estimate of the mean weight of all women. b. Find a 95?% confidence interval estimate of the mean weight of all women.

Math   Statistics-And-Probability   
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