1: ABC university studies the length of time that a student waits for a bus at

ABC university. The length of time a student must wait for a bus at ABC university is approximately

normally distributed with a mean of 25 minutes and a standard deviation of 5 minutes. Please answer the

following questions:

Cu a (20 im)/ Question a: What is the probability that a student must wait between 18 and 26

minutes for a bus?

Cu b (20 im)/ Question b: What is the probability a student must wait between 22 and 24 minutes

for a bus?

Cu c (10 im)/ Question c: Explain the reasons why ABC university needs to find out specific

probabilities as mentioned for Questions a and b. Explain how ABC university has a mean of 25 minutes

and a standard deviation of 5 minutes in this case.