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the number of chocolate chips in an 18-oz bag of chip ahoy! chocolate chips is approximated...

the number of chocolate chips in an 18-oz bag of chip ahoy! chocolate chips is approximated normally distributed with a mean of 1262 chips and a standard deviation of 118 chips according to a study by cadets of the US air force academy. determine the 30th percentile for the number of chocolate chips in an 18-oz bag of chips ahoy! cookies.
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Answer #1

Let ,

Now ,

...............(I)

From standard normal distribution table , .................(II)

From (I) and (II) , we get ,

Therefore , the 30th percentile for the number of chocolate chips in an 18-oz bag of chips ahoy is 1177.04

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