SOLUTION: Of the new cars in a car dealer's lot, 1 in 6 are white. Today, 4 cars were sold. Round your answers to the nearest thousandths. a. What is the probability that 3 of the cars so

Algebra ->  Probability-and-statistics -> SOLUTION: Of the new cars in a car dealer's lot, 1 in 6 are white. Today, 4 cars were sold. Round your answers to the nearest thousandths. a. What is the probability that 3 of the cars so      Log On


   

Question 871559: Of the new cars in a car dealer's lot, 1 in 6 are white. Today, 4 cars were sold. Round your answers to the nearest thousandths.
a. What is the probability that 3 of the cars sold were white?


b. What is the probability that at least 2 of the cars sold were white?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

p(white) = 1/6,   n = 4

P(x = 3) = 4C3(1/6)^3(5/6)^1  0r binompdf(4, 1/6, 3) = 0.0154

P(x ≥ 2) = 1 - binomcdf(4, .1667, 1) = 0.132