The number of chocolate chips in an 1Bounce bag of chocolate chip cookies is approximately nonnally 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 1100 chocolate chips? [c] What proportion of bags contains more than 1200 chocolate chips? [:1] What is the percentile rank of a bag that contains 1025 chocolate chips? E Homework: UNIT4 - Section 12 Homework Part 1 of 4 The lengths of a particular animal's pregnancies are approximately normally distributed, with mean [1 = 268 days and standard deviation 0 = 3 days. [a] What proportion of pregnancies lasts more than 2M days? [b] What proportion of pregnancies lasts between 254 and 2m days? [c] What is the probability that a randomly selected pregnancy lasts no more than 253 days? [d]A "very pretenn" baby is one whose gestation period is less than 255 days. Are very preterm babies unusual? The mean incubation time of fertilized eggs is 21 days. Suppose the incubation times are approximately normally distributed with a standard deviation of 1 day. [3] Determine the 11th percentile for incubation times. [b] Determine the incubation times that make up the middle 97% of fertilized eggs