The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1261 chips and a standard deviation of 117 chips.
(a) Determine the 27th 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?
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