Question

1.) In a sociological study concerning family life, it is found that the age at first marriage for men is normally distributed with a mean equal to 23.7 years and a standard deviation equal to 3.5 years. Determine the percent of men for whom the age at first marriage is between 20 and 30 years of age.

2.)The price for a gallon of whole milk is uniformly distributed between $2.25 and $2.75 during July in the U.S. Let X be a random variable that represents the price per gallon of whole milk during July. a. Determine the percent of stores that charge at least $2.70 per gallon. b. Find the mean and standard deviation of the milk prices.

Answer 1