The mass of a species of mouse commonly found in houses is normally distributed with a mean of 19.9
grams with a standard deviation of 0.15 grams.
a) What is the probability that a randomly chosen mouse has a mass of less than 19.73 grams?
b) What is the probability that a randomly chosen mouse has a mass of more than 20 grams?
c) What proportion of mice have a mass between 19.8 and 19.97 grams?
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