Here are summary statistics for randomly selected weights of newborn girls: n= 243, ×= 29.8 hg, s=7.8 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 27.3 hg < u < 33.1 hg with only 14 sample values, × = 30.2 hg, and s= 3.6 hg?

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000