A study found that the mean amount of time cars spent in?drive-throughs of a certain?fast-food restaurant was 137.1 seconds. Assuming?drive-through times are normally distributed with a standard deviation of 29 ?seconds, complete parts?(a) through?(d) below.

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(a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 103 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 103 seconds Is (Round to four decimal places as needed.) (6) What is the probability that a randomly selected car will spend more than 191 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 191 seconds in the restaurant's drive-through is (Round to four decimal places as needed.) (e) 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.) (d) Would it be unusual for a car to spend more than 3 minutes in the restaurant's drive-through? Why? The probability that a car spends more than 3 minutes in the restaurant's drive-through is . so it be unusual, since the probability is than 0.05 (Round to four decimal places as needed.)