The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of
12521252
chips and standard deviation
129129
chips.
(a) What is the probability that a randomly selected bag contains between
11001100
and
15001500
chocolate chips, inclusive?
(b) What is the probability that a randomly selected bag contains fewer than
11001100
chocolate chips?
(c) What proportion of bags contains more than
11751175
chocolate chips?
(d) What is the percentile rank of a bag that contains
14251425
chocolate chips?
