A public health organization reports that
40%
of baby boys
6-8
months old in the United States weigh more than 20 pounds. A sample of 10 babies is studied. Round the answers to three decimal places. (a) What is the probability that exactly 4 of them weigh more than 20 pounds? 1 point (b) What is the probability that more than 4 weigh more than 20 pounds? 3 points (c) What is the probability that fewer than 3 weigh more than 20 pounds? 3 points (d) Would it be unusual if more than 7 of them weigh more than 20 pounds? 4 points