per time Q7] Suppose that in a production of spark plugs the fraction of defective plugs has been constant at 2% over a long time and that this process is controlled every half hour by drawing and inspecting two just produced. Find the probabilities of getting (a) no defectives, (b) 1 defective, (c) 2 defectives. What is the sum of these probabilities?

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A: Please find screenshot below.

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