At an inspection line, several motors are inspected. It is known that defects between motors are not related. The mean of defective motor is 5 motors. What is the probability that the first defective motor is the fifth motor that you inspected? What is the probability of the first defective motor to come before or on the 8th inspected motor?

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  1. At an inspection line, several motors are inspected. It is known that defects between motors are not related. The mean of defective motor is 5 motors.

What is the probability that the first defective motor is the fifth motor that you inspected?

What is the probability of the first defective motor to come before or on the 8th inspected motor?

 

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Step 1

Solution-:

Given : λ=5

We find,

(a) P[the first defective motor is the fifth motor that you inspected]=?

(b) P[the first defective motor to come before or on the 8th inspected motor]=?

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