In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lbs, with a standard deviation of 4.8 lbs.
A) Give a point estimate for the pounds lost if everybody who wanted to lose weight tried the Atkins weight loss program.

B)Check the SINS assumptions

C) Construct a 90% confidence interval estimate of the pounds lost on the Atkins weight loss system.