The J.O.Supplies Company buys calculators from a Korean supplier.The probability of a defective calculator is 10 percent.If 100 calculators are selected at random,what is the standard deviation of the number of defectives?
A)9.00
B)3.17
C)9.49
D)3.00

Question

Quizplus · Accepted Answer

The standard deviation for a binomial distribution is calculated using the formula: √(n * p * (1-p)), where n is the number of trials (100), and p is the probability of success (0.10). Thus, √(100 * 0.10 * 0.90) = √9 = 3.00.

The JOSupplies Company Buys Calculators from a Korean Supplier