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.
(a) What is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive?
(b) What is the probability that a randomly selected bag contains fewer than 1000 chocolate chips?
(c) What proportion of bags contains more than 1225 chocolate chips?
(d) What is the percentile rank of a bag that contains 1450 chocolate chips?
(a) The probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive, is
(Round to four decimal places as needed.)
(b) The probability that a randomly selected bag contains fewer than 1000 chocolate chips is ☐
(Round to four decimal places as needed.)
(c) The proportion of bags that contains more than 1225 chocolate chips is
(Round to four decimal places as needed.)
(d) A bag that contains 1450 chocolate chips is in the th percentile.
(Round to the nearest integer as needed.)