Exhibit 5-9.On a particular production line,the likelihood that a light bulb is defective is 5%.Ten light bulbs are randomly selected. Refer to Exhibit 5-9.What are the mean and variance of the number of defective bulbs?
A)0.475 and 0.475
B)0.475 and 0.6892
C)0.50 and 0.475
D)0.50 and 0.6892

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The Answer of Exhibit 5-9.On a particular production line,the likelihood that a light bulb is defective is 5%.Ten light bulbs are randomly selected. Refer to Exhibit 5-9.What are the mean and variance of the number of defective bulbs?
A)0.475 and 0.475
B)0.475 and 0.6892
C)0.50 and 0.475
D)0.50 and 0.6892