A machine on the average produces 5% defective articles. What are the mean and standard deviation in sets of 100 articles?
| A. | 5.3 |
| B. | 3.4 |
| C. | 2.2 |
| D. | 3.3 |
Answer : C Explanation : Mean = np = 100 x 0.05 = 5 σ = √(npq) = √(0.05 x 0.95 x 100) = 2.2 Hence the answer is (c). |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
