An array of 30 LED bulbs is used in an

An array of 30 LED bulbs is used in an automotive light. The probability that a bulb is defective is 0.001 and defective bulbs occur independently. Determine the following:

(a) Probability that an automotive light has two or more defective bulbs.

(b) Expected number of automotive lights to check to obtain one with two or more defective bulbs.

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