Question: Suppose the shoe size of workers at Au & Associates is normally distributed, with a mean of 10.0 inches, and a standard deviation of 0.5 inch. My brother made that assumption because he is too cheap to do a real survey! Anyway, a clueless shoe manufacturer is going to introduce a new line of shoes specifically for Au & Associates workers. How many pairs of each of the following sizes should be included in a batch of 1,000 pair of shoes?

a. 8.5 b. 9.0 c. 9.5 d. 10.0
e. 10.5 f. 11.0 g. 11.5