Answer Happy

Question 6 Tries remaining: 1 Marked out of 3.00 Flag question Andy is a product manufacturer. He believes 74% of his customers are satisfied with the quality of his products. From a random sample of 77 customers, what are the following probabilities? (If necessary, use the sampling distribution of the sample proportion, NOT the normal approximation to binomial.) (a) What is the probability that less than 57 customers are satisfied with the quality? (Round your answers to 4 decimal places, if needed.) (b) What is the probability that at least 57 customers are satisfied with the quality? (Round your answers to 4 decimal places, if needed.) (c) What is the probability that the sample proportion of customers who are satisfied with the quality is between 71% and 79%? (Round your answers to 4 decimal places, if needed.) Check