Karen wants to advertise how many chocolate chips (in grams) are in each Big Chip cookie at her bakery. She randomly selects a sample of 19 cookies and finds that the number of chocolate chips per...

Karen wants to advertise how many chocolate chips (in grams) are in each Big Chip cookie at her bakery. She randomly selects a sample of 19 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 115.1 and a standard deviation of 32.1. What is the 90% confidence interval for the number of chocolate chips per cookie for Big Chip cookies?