The J.O.Supplies Company buys calculators from a Korean supplier.The probability of a defective calculator is 10%. If 100 calculators are selected at random,what is the expected number of defectives?
A)9
B)90
C)10
D)95

Question

Quizplus · Accepted Answer

The expected number of defectives can be calculated by multiplying the probability of a defective calculator (0.10) by the number of calculators selected (100).
Expected number of defectives = 0.10 x 100 = 10. Therefore, the best choice is C.

The JOSupplies Company Buys Calculators from a Korean Supplier