A study found that the mean amount of time cars spent in

Last updated: 7/13/2023

A study found that the mean amount of time cars spent in drive throughs of a certain fast food restaurant was 136 7 seconds Assuming drive through times are normally distributed with a standard deviation of 33 seconds complete parts a through d below Click here to view the standard normal distribution table page 1 Click here to view the standard normal distribution table page 2 CITE The probability that a randomly selected car will get through the restaurant s drive through in less than 75 seconds is 0 0308 Round to four decimal places as needed b What is the probability that a randomly selected car will spend more than 179 seconds in the restaurant s drive through The probability that a randomly selected car will spend more than 179 seconds in the restaurant s drive through is 0 1003 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 0 5999 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 unusual since the probability is than 0 05 Round to four decimal places as needed be