According to theDaily Reporter, 70% of U.S. households have one or more pets.If 12 U.S. households are selected at random. Answer the following.Write probabilities to three decimal places.

a) What is the sample size, n?

b) What is the probability of success?

c) What is the probability exactly three households have one or more pets?

d) What is the probability at most 5 households have one or more pets?

e) What is the probability at least 9 households have one or more pets?

f) What is the probability more than 7 households will have one or more pets?

g) What is the mean?

h) What is the standard deviation?(Round to two decimal places.)