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Suppose you know that the proportion of all cars that are foreign is 0.6. Using the...

Suppose you know that the proportion of all cars that are foreign is 0.6. Using the table what is the probability of finding 2 cars that are foreign out of 10 cars?

Math   Statistics-And-Probability   
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Answer #1

It is a case of binomial distribution because each sample is independent and has only two possible outcomes, either foreign car or not a foreign car.

we have p = 0.6

n = 10 and r = 2

using the binomial formula

setting the given values, we get

this gives us

Probability of finding 2 cars = 45*0.0002359 = 0.0106 (rounded to 4 decimal places)

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