Question: 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

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 waiting time follows a Normal distribution. When a customer arrives at the restaurant for dinner, find the probability that the customer will have to wait the following time. (9 marks)

a)Less than 18 minutes(2 marks)

b)More than 26 minutes (2 marks)

c)Between 15 and 22 minutes (3 marks)

d)Suppose there is a 10% chance that the customer will wait less than K minutes

before he or she can seat for dinner. Find K. (2 marks)

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