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22.Bulbs are packed in cartons each containing 40 bulbs, seven hundredcartons were examined for defective bulbs and the results are given infollowing table.No. of defective bulbs Frequency023456More than 640018048411882One carton was selected at random. What is the probability that it has.a. No defective bulbb. Defective bulb from 2 to 6c. Defective bulb less than 4 |
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Answer» Total bulbs are=400+180+48+41+18+8+3+2=700(a) probability of no defective bulb=400/800=0.5(b) probability of 2 to 6 (it includes 2, 3,4,5 and 6 ) defective bulbs=398/800=0.4975(c) probability of less than 4 (it includes 0,1,2 &3) defective bulbs=669/800=0.83625 But which questions are giving you are not send answers |
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