In: Statistics and Probability
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips.
d) What is the percentile rank of a bag that contains 1450 chocolate chips?
d) Z = (X - µ) / sd = (1450 - 1252) / 129 = 1.53
Percetnile rank = P(Z < 1.53) = 0.9370 = 93.7 percentile