The average waiting time to be seated for dinner at a popular restaurant is 23.5 minutes, with a standard deviation of 3.6 minutes. Assume the variable is normally distributed. When a costumer arrives at the restaurant for dinner, find the probability that the costumer will have to wait the following time.
a. Between 15 and 22 minutes
b. Less than 18 minutes and more than 25 minutes
WITH COMPLETE SOLUTION PLSSSS <3 <3 <3 <3 <3
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the answer is a - b is to c
this is the process
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