From september 1981 to september 1984 the enrollment at a particular school declined to 11%. if the number of students enrolled at that school in september 1984 was 712 what was the enrollment in september 1981?

a) 78 b) 634 c) 701
d) 790 e)800

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?