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Question 18Bulbs are packed in cartons each containing 40 bulbs. Seven hundred cartons were examined for defective bulbs and the results are given in the following table.Number of0123456Moredefectivethan 6bulbsFrequency400180484118832One carton was selected at random. What is the probability that it has(i) No defective bulb?(ii) Defective bulbs from 2 - 6?(iii) Defective bulbs less than 4?

Answer»

Question 18

Bulbs are packed in cartons each containing 40 bulbs. Seven hundred cartons were examined for defective bulbs and the results are given in the following table.





Number of0123456Moredefectivethan 6bulbsFrequency400180484118832



One carton was selected at random. What is the probability that it has

(i) No defective bulb?



(ii)
Defective bulbs from 2 - 6?



(iii) Defective bulbs less than 4?





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