Help please with parts b and c. Thank you.

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1263 chips and a standard deviation of 118 chips. (a) Determine the 28th 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 96% of bags. (c) What is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies? (a) The 28th percentile for the number of chocolate chips in a bag of chocolate chip cookies is 1194 chocolate chips. (Round to the nearest whole number as needed.) (b) The number of chocolate chips in a bag that make up the middle 96% of bags is to chocolate chips. (Round to the nearest whole number as needed. Use ascending order.)