Children’s Sleep Problems. Families and pediatricians often have difficulty managing sleep problems of young children. In the article “An Individualized and Comprehensive Approach to Treating Sleep Problems in Young Children” (Journal of Applied Behavioral Analysis, Vol. 46, No. 1, pp. 161–180), researchers C. Jin et al. estimate that sleep problems affect 70% of children with an autism spectrum disorder. If 50 children with an autism spectrum disorder are selected at random, what is the probability that the number who have sleep problems

a. is exactly 70% of those sampled?

b. at most 70% of those sampled?

c. at least 70% of those sampled?

Extending the Concepts and Skills