The population mean for the average weigh of 12 year old children is 102 pounds and the population standard deviation is 40. A random sample of 50 drawn from a population a. Find the probability that...

Only b)

Extracted text: The population mean for the average weigh of 12 year old children is 102 pounds and the population standard deviation is 40. A random sample of 50 drawn from a population a. Find the probability that the sample taken will have the average weight of the children will be between 110 and 114. b. What is the probability that the variance for the sample will be between 120 and 200?