The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1262 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 95​% of bags. (c) What is the interquartile range of the number of chocolate chips in a bag of chocolate chip​ cookies?

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