The Manager of a Store Buys Portable Radios in Lots

question 25

Multiple Choice

The manager of a store buys portable radios in lots of 12. Suppose that, on the average, 2 out of each group of 12 are defective. The manager randomly selects 6 radios out of the group to test. What is the probability that he will find 3 defective radios? Round your answer to six decimal places. ​

• A)Pr(3 Defective) = 0.017861
• B)Pr(3 Defective) = 0.021433
• C)Pr(3 Defective) = 0.035722
• D)Pr(3 Defective) = 0.026792
• E)Pr(3 Defective) = 0.053584

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Definitions:

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A developmental stage or crisis characterized by uncertainty about oneself and one’s place in the world.

Initiative

Initiative is the ability to assess and initiate things independently, often to take charge or perform a new action in pursuit of innovation or problem-solving.

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In a psychological context, industry refers to a stage of development where an individual demonstrates a capacity for hard work and the pursuit of productive goals, often associated with Erik Erikson's theory of psychosocial development.

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A phase in Freudian psychosexual development when a child's focus is on controlling bladder and bowel movements, typically occurring between 18 months and three years old.