Big babies: The Centers for Disease Control and Prevention reports that 25% of baby boys 6–8 months old in the United States weigh more than 20 pounds. A sample of 16 babies is studied.

Question

a.	What is the probability that exactly 5 of them weigh more than 20 pounds?

Answer 1

Use your graphing calculator, hit the second thenVARS scroll down to binompdf(n,p,k) or binompdf(20,.25,5)