The time required to prepare a fruit smoothie using low-fat milk at the Tropical Smoothie Caf is uniformly distributed between 35 and 75 seconds. Assuming a customer just ordered a low-fat milk fruit smoothie, determine the probabilities described below. a. What is the probability that the preparation time will be more than 40 seconds? b. What is the probability that the preparation time will be between 46 and 65 seconds? c. What percentage of low-fat milk fruit smoothies will be prepared within 68 seconds? d. What is the standard deviation of preparation times for a fruit smoothie using low-fat milk at the Tropical Smoothie Caf? Question content area bottom Part 1 a. P(preparation time more than 40 seconds)equals enter your response here (Simplify your answer.) Part 2 b. P(preparation time between 46 and 65 seconds)equals enter your response here (Simplify your answer.) Part 3 c. P(preparation time less than or equal to 68)equals enter your response here% (Simplify your answer.) Part 4 d. sigmaequals enter your response here (Round to four decimal places as needed.)