A Pew Internet & American Life Project Survey (October 2010) revealed that half of all U.S. adults use the Internet and have paid to download music. In a random sample of 250 U.S. adults, let x be the number who use the Internet and pay to download music. a. Explain why x is a binomial random variable (to a reasonable degree of approximation).
b. What is the value of p? Interpret this value.
c. What is the expected value of x? Interpret this value.