The weight of Labrador Retrievers is normally distributed with Mean 73 lbs and Standard Deviation 12 lbs.
a) Shade in and calculate the probability that a randomly selected dog weighs less than 75 lbs.
b) Shade in and calculate the probability that a randomly selected dog weighs greater than 65 lbs.
c) Shade in and calculate the probability that a randomly selected dog weighs between 69 and 79 lbs.