Bulbs are packed in cartons each containing 40 bulbs. Seven hundred cartons were examined for defective bulbs and the results are in the following table:
Number of defective bulbs in a carton 0123456more than 6 Frequency 400180484118832One carton was selected at random. What is the probability that it has
(i) No defective bulb?
(ii) Defective bulbs from 2 to 6?
(iii) Defective bulbs less than 4
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Answer:
defective bulbs from 2 to 6
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