The number of chocolate chips in 18 ounce bag of chocolate chips os approxiamately normally distributed with the mean of 1252 chipos and standard deviation 129 chips.
(a) Determine the probability that randomly chosen bag haves between 1000 and 1500 chocolate chips, inclusive?
(b) Determine the probability that a randomly chosen bag haves fewer 1050 chocolate chips?
(c) What proportion of bags haves more than 1175 chocolate chips?
(d) Determine the percentile rank of a bag that contains 1475 chocolate chips?
Round to four decimal places as needed.