Question
(d) what proportion of 18-ounce bags of chips ahoy! contains fewer than 1125 chocolate chips?
(e) What is the percentile rank of an 18-ounce bag of chips ahoy! that contains 1475 chocolate chips?
(f)what is the percentile rank of an 18-ounce bag of chips ahoy! that contains 1050 chocolate chips?
NW 39. Chips Ahoy! Cookies The number of chocolate chips in
an 18-ounce bag of Chips Ahoy! chocolate chip cookies is
approximately normally distributed with a mean of 1262 chips
and standard deviation 118 chips according to a study by cadets
of the US Air Force Academy.
Source Brad Warner and Jim Rutledge, Chance 12(1): 10-14. 1999
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Transcribed Image Text

NW 39. Chips Ahoy! Cookies The number of chocolate chips in an 18-ounce bag of Chips Ahoy! chocolate chip cookies is approximately normally distributed with a mean of 1262 chips and standard deviation 118 chips according to a study by cadets of the US Air Force Academy. Source Brad Warner and Jim Rutledge, Chance 12(1): 10-14. 1999

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