Rofessor ivy has given the following weights to her grades:
weight of area
homework
5%
projects
25%
quiz
25%
exams
45%
your friend has the following averages:
homework: 95
projects: 89
quizzes: 80
exams: 84

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?