Of all customers purchasing automatic garage-door openers, 65% purchase a chain-driven model. Let X = the...

Of all customers purchasing automatic garage-door openers, 65% purchase a chain-driven model. Let X = the number among the next 20 purchasers who select the chain-driven model. (Keep four decimals if necessary.)

a. What is the distribution that X follows?

b. Compute P(X > 10).

c. Compute P(6 ≤ X ≤ 10).

d. Compute E(X).

e. Compute V(X)

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orchestra answered 1 year ago

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