SOLUTION: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chi

Algebra ->  Probability-and-statistics -> SOLUTION: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chi      Log On


   



Question 1182873: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery.
She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 14.9 and a standard deviation of 1.3.
What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies?
Answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The 98% C.I. for the number of chocolate chips per cookie will be
, or the interval [14.427762, 15.372238].