- Astudy Found That The Mean Amount Of Time Cars Spent In Drive Throughs Of A Certain Fast Food Restaurant Was 1543 Second 1 (17.97 KiB) Viewed 6 times
- Astudy Found That The Mean Amount Of Time Cars Spent In Drive Throughs Of A Certain Fast Food Restaurant Was 1543 Second 2 (19.59 KiB) Viewed 6 times
- Astudy Found That The Mean Amount Of Time Cars Spent In Drive Throughs Of A Certain Fast Food Restaurant Was 1543 Second 3 (19.59 KiB) Viewed 6 times
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 154.3 seconds. Assuming drive-through times are normally distributed with a standard deviation of 28 seconds, complete parts (a) through (d) below (a) What is the probability that a randomly selected car will get through the restaurants drive through in less than 118 seconds? The probability that a randomly selected car will get through the restaurants drive through in less than 118 seconds is (Round to four decimal places as needed) (b) What is the probability that a randomly selected car will spend more than 203 seconds in the restaurants drive-through The probability that a randomly selected car will spend more than 203 seconds in the restaurant's drive-through is Round to four decimal places as needed) (c) What proportion of cars spend between 2 and 3 minutes in the restaurants drive through The proportion of cars that spend between 2 and 3 minutes in the restaurants arive 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 restaurants drive-through? Why? The probability that a car spends more than 3 minutes in the restaurants drive-through so [ (Round to four decimal places as needed) be unusual, since the probability is than 0.05