What is the probability that the preparation time will be

Reference no: EM133401403

Questions: The time required to make a certain specialty coffee at a local coffee shop is uniformly distributed between 40 and 80 seconds. Assuming a customer just ordered one of these specialty? coffees, determine the probabilities described below.

a. What is the probability that the preparation time will be more than 54 ?seconds? (simplify your answer)

b. What is the probability that the preparation time will be between 52 and 61 ?seconds? (simplify your answer)

c. What percentage of these specialty coffees will be prepared within 72 ?seconds? (simplify your answer

d. What is the standard deviation of preparation times for this specialty coffee at this? shop? (Round to four decimal places as needed)

Reference no: EM133401403

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