The mass of a species of mouse commonly found in houses is normally distributed with a mean of 20.9 grams with a standard deviation of 0.2 grams.

For parts (a) through (c), enter your responses as a decimal with 4 decimal places.

a) What is the probability that a randomly chosen mouse has a mass of less than 20.74 grams?

b) What is the probability that a randomly chosen mouse has a mass of more than 21.14 grams?

c) What proportion of mice have a mass between 20.8 and 21.04 grams?

d) 10% of all mice have a mass of less than grams.?