In: Statistics and Probability
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)