Over the past 120 days working, the number of defective bulbs produced by a machine Is given in the following table
No of defective bulbs: 0 1 2. 3. 4.
Number of days 40. 22. 18. 18. 9
Continued
No of defective bulbs: 5. 6.
Number of days : 9. 4
Determine the probability that the tomorrow's output will have
1. No defective bulb
2. At least 2 defective bulb
3. Not more than 5 defective bulbs
4.defective bulbs between 2 and 5
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