The time it takes to change your summer to winter tires, including waiting time, at CANUCK TYRES, is uniformly distributed between 100 and 220 minutes.

What is the probability that it will take between 2 hours and 2.5 hours? (round to 2 decimal places if necessary)

a).20

b).25

c).30

d).33

Barking Pup Chews (BPC) Inc. sells bags of dog food to Hobeys Grocery Chain. BPC uses an automatic filling process to fill bags. Weights of the filled bags are normally distributed with a mean of 12 kilograms and a standard deviation of 1.2 kilos.

What is the least weight that a bag of dog food could have and still remain in the top 10% of all weights of all bags filled? (Round to two decimal places as needed.)

a) 16.58

b) 14.55

c) 13.54

d) 13.01