Question

Q31
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.
6
More
than 6
No. of 0
1
2
3
5
defective
bulbs
Frequency 400 180
41
18
8
One carton was selected at random . What is the probability that it has:
3
2
(1) No defective bulb?
(36) Detective bulbs form 2 to 6.
(i) defective bulbs less than 4?​

Answer 1

Answer:

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