Some games of chance rely on tossing two dice. Each die has six faces, marked with 1, 2, . . . , 6 spots called pips. The dice used in casinos are carefully balanced so that each face is equally likely to come up. When two dice are tossed, each of the 36 possible pairs of faces is equally likely to come...

Suppose 76% of the U.S. adults have been to a casino within the last year. If you randomly selected a sample of 500 adults: a) What is the mean and standard deviation of the number of adults, X, who have been to a casino within the last year? b) Use the normal approximation to estimate the probability...