A consumer looking to buy a used red Miata car will call dealerships until she finds a dealership that carries the car. She estimates the probability that any independent dealership will have the car will be 26%. We are interested in the number of dealerships she must call.

a. Find the probability that she must call at most 8 dealerships. (Round your answer to four decimal places.)

b. Find the probability that she must call 3 or 4 dealerships. (Round your answer to four decimal places.)