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Probability

Maths & Stats

In this example we have to calculate the expected no. Of defective lamps then why did they have calculated for non defective lamps

Sushma Verma

CA Inter

★ 2K+

06-Apr-21 02:22

323

Answers (2)

Please see the full solution in the material. Computation is done in 4 assumptions as what will be the probability when the defectives selected are either 0,1,2 or 3 when 3 lamps are selected. On adding all the 4 outcomes, we get the total probability of selecting defective lamps.