A survey of U.S. adults ages 21 and older who are regular drinkers found that 38% name beer as their favorite beverage. You randomly select 25 U.S. adults ages 21 and older who are regular drinkers and ask them to name their favorite beverage. Find the probability that the number who name beer as their favorite beverage is 

(a) No fewer than 10, 

(b) At least 13, and 

(c) Between 6 and 8, inclusive.

A binomial experiment is given. Determine whether you can use a normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cannot, explain why.