1. The distribution of the width of a standard piece of computer paper is normal with an expectation of 8.5 inches and the standard deviation of 0.2 inch.
a) Find the probability that the width of any given piece of computer paper is between 8.40 and 8.55.
b) Find the probability that the width of any given piece of computer paper is less than 8.35.
c) Find the probability that the width of any given piece of computer paper is greater than 8.6.
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