Andy is a restaurant owner. He believes 74% of his customers are satisfied with the food quality of his restaurant. From a random sample of 89 customers, what are the following probabilities? (Round to 2 decimal places for all z-values and round all other answers to 4 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 71% and 79%?