In the morning, you call SFU Library to answer your questions about overdue fees.You notice that it takes between 5 to 30 minutes to get through, talk to a Library Assistant, and solve your overdue fees problems. The time to get service from SFU Library follows a uniform distribution.

Enter the LETTER of the correct answer(2 marks each)

Part 1: What is the probability that it will take at least 20 minutes to talk to someone?

a.0.6000

b.0.4000

c.0.6667

d.0.3333

Part 2:You call the SFU Library at 10:07 AM . What is the probability that you get through before your virtual class in Statistics that starts at 10:30 AM?

a.0.7200

b.1.3889

c.0.6000

d.0.7667

Part 3: 25% of the time it takes you longer than how many minutes to get through SFU Library?

a.6.25

b.11.25

c.23.75

d.22.50