The probability that the number of defective relays is at most 2 is 0.1246.
It should be noted that of 100 electrical relays produced at a factory, on average 1 is defective. This implies that the probability of a defective is 0.01.
Therefore, the probability that the number of defective relays is at most 2 will be:
= e^-5 × (5^0/0! + 5/1! + 52/2!).
= 0.1246
Therefore, the probability that the number of defective relays is at most 2 is 0.1246.
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