Andy is a restaurant owner. He believes 77% of his customers are satisfied with the food quality of his restaurant. From a random sample of 83 customers, what are the following probabilities? (Round your answers to four decimal places, if needed.) (a) What is the probability that less than 64 customers are satisfied with the food quality? (b) What is the probability that at least 64 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 74% and 81%?
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Andy is a restaurant owner. He believes 81% of his customers are satisfied with the food quality of his restaurant. From a random sample of 74 customers, what are the following probabilities? (Round your answers to four decimal places, if needed.) (a) What is the probability that less than 60 customers are satisfied with the food quality? (b) What is the probability that at least 60 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 79% and 85%?
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Andy is a restaurant owner. He believes 85% of his customers are satisfied with the food quality of his restaurant. From a random sample of 75 customers, what are the following probabilities? (Round your answers to four decimal places, if needed.) (a) What is the probability that less than 64 customers are satisfied with the food quality? (b) What is the probability that at least 64 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 83% and 90%?
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