Here are summary statistics for randomly selected weights of newborn girls: n 246, x-31.7 hg, s 7.5 hg. Construct a confidence interva estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 29.Thg ? 33,5 g with only 18 sample values, x 31.6 hg, and s 3.1 hg? What is the confidence interval for the population mean ?? hg a) Yes, because the confidence interval limits are not similar.
b) No, because the confidence interval limits are similar
c) No, because each confidence interval contains the mean of the other confidence interval.
d) Yes, because one confidence interval does not contain the mean of the other confidence interval.