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a package contains 9 resistor 2 of which are defective find the probability of 0 being...

a package contains 9 resistor 2 of which are defective find the probability of

0 being defective

1 being defective

2 being defective

3 being defective

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Let X be a random variable representing the number of defective resistors in the package. Then X is a binomial random variable with n=9 and p=2/9.

We know

Then the probability of 0 being defective is

Then the probability of 1 being defective is

Then the probability of 2 being defective is

Then the probability of 3 being defective is

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