Question

Quz.Quz6-Chapter 8 This Question: 1 pt Submit Q Statist 2 of 5 This Quiz: 5 pts poss ses Home Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean (a) What is the probability that a randomly selected pregnancy lasts less than 227 days? The probability that a randomly selected pregnancy lasts less than 227 days is approximately (Round to four decimal places as needed.) (b) What is the probability that a random sample of 17 pregnancies has a mean gestation period of 227 days or less? The probability that the mean of a a random sample of 17 pregnancies is less than 227 days is approximately (Round to four decimal places as needed.) (c) What is the probability that a random sample of 44 pregnancies has a mean gestation period of 227 days or less? The probability that the mean of a a random sample of 44 pregnancies is less than 227 days is approximately(Round to four decimal places as needed.) ơ-22 days. Contents nch d Solutions nal Resources ork & Tests lan ook edia Library

Answer 1

Let X denotes the length of pregnancy of a randomly selecting animal.

X ~ Normal(235, 22²)

a) Now,

b) Let Y denotes the length of pregnancy of a randomly selecting group of 17 people.

or

Now,

c) Let X denotes the length of pregnancy of a randomly selecting group of 44 people.

Y Normal (235. _)
or

Now,