Andy is a restaurant owner. He believes 82% of his customers are satisfied with the food quality of his restaurant. From a random sample of 80 customers. what are the following probabilities? [Round your answers to four decimal places, if needed] (a) What is the probability that less than 66 customers are satisfied with the food quality? [b] What is the probability that at least 66 customers are satisfied with the food quality? [c] What is the probability that the sample proportion of customers who are satisfied with the food quality is between 80% and 87%