For each of the examples below, decide if X is a binomial random variable. If so, specify n and p. If not, explain why not.
a. X = number of heads from flipping the same coin ten times, where the probability of a head = 1/2.
b. X = number of heads from flipping two coins five times each, where the probability of a head for one coin = 1/2 and the probability of a head for the other coin = 1/4.
c. X = number of cities in which it will rain tomorrow among five neighboring cities located within 10 miles of each other.
d. X = number of children who will get the flu this winter in a kindergarten class with 20 children.