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27 greater than 208 cm. 1.0 30 c.Why can the nomal distributon be used in part(b,even though the sample size does not exceed 30? H can e reca+e orgnn 3.30 points) Using the simple random sample of weights of women from a data set,we oblain these sample stafisticsn=60 and=160 lb.Research from other sources suggests that the population of weights of women has a standard deviation given by o-32Ib a.We intend to construct a 90% confidence interval to estimate the population mean.What confidence coefficient should be used? Z2=45V b.What is the margin of error? mEIGA 68 c.Find a 90 % conficence interval estimate of the mean weight of all women. 00145 153.21,1668