(Round to four decimal places as needed ) (c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive-through? The proportion of carn that spend between 2: and 3 minutes in the restaurant's drive through is [Round to four decimal places as needed ) an example Get more help . Clear all Check answer a 78'F MoA study found that the mean amount of time cars spent in drive throughs of a certain fast-food restaurant was 144.9 seconds, Assuming drive through times are normally distributed with a standard deviation of 31 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive through in less than 91 seconds? The probability that a randomly selected car will get through the restaurant's drive through in less than 91 seconds is 0 0409 (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 199 seconds in the restaurant's drive- through? The probability that a randomly selected car will spend more than 199 seconds in the restaurant's drive through in 0 0401 (Round to four decimal places as needed.) (c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive through? The proportion of cars that spend between 2 and 3 minutes in the restaurant's drive-through is (Round to four decimal places as needed.)