Keith’s Florists has 16 delivery trucks, used mainly to deliver flowers and flower arrangements in the...

Keith’s Florists has 16 delivery trucks, used mainly to deliver flowers and flower arrangements in the Greenville, South Carolina, area. Of these 16 trucks, 6 have brake problems. A sample of 5 trucks is randomly selected. What is the probability that 2 of those tested have defective brakes? (Round your answer to 4 decimal places.)

Solutions

Expert Solution

Here, n = 5, p = 0.375, (1 - p) = 0.625 and x = 2
As per binomial distribution formula P(X = x) = nCx * p^x * (1 - p)^(n - x)

We need to calculate P(X = 2)
P(X = 2) = 5C2 * 0.375^2 * 0.625^3
P(X = 2) = 0.3433
0

orchestra answered 2 years ago

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