A trailer manufacturing company buys screw fasteners in boxes of 5,000. Two percent of all fasteners are unusable.

A trailer manufacturing company buys screw fasteners in boxes of 5,000. Two percent of all fasteners are unusable. The mean and standard deviation of the number x of unusable fasteners in a randomly selected box are about:

(2, 0.98)

(200, 9.9)

(100, 9.9)

(100, 98)

(10, 1)