A recent Pew Research survey reported that 48% of 18-to 29-year-olds in the United States own tablets.

Question:

A recent Pew Research survey reported that 48% of 18-to 29-year-olds in the United States own tablets. (Data extracted from “Tablet and E- Reader Ownership,” bit. ly/ 1gEwogC). Using the binomial distribution, what is the probability that in the next six 18- to 29- year-olds surveyed,
a. Four will own a tablet?
b. All six will own a tablet?
c. At least four will own a tablet?
d. What are the mean and standard deviation of the number of 18- to 29- year-olds who will own a tablet in a survey of six?
e. What assumptions do you need to make in (a) through (c)?