In a carton of 20 bulbs, 4 bulbs are defective. Find the probability that a bulbs selected at random is non-defective
Gurvez:
p(e)=16/20 0.8 anw
0.8 is answer
Answers
Answered by
89
Total number of bulbs in the cartoon, a = 20
Defective bulbs in the cartoon, b = 4
Non-defective bulbs in the cartoon, c = 20 - 4 = 16
When one of the bulbs is selected from the cartoon,
The probability of getting a non-defective bulb = c/a = 16/20 = 4/5 = 0.8
Defective bulbs in the cartoon, b = 4
Non-defective bulbs in the cartoon, c = 20 - 4 = 16
When one of the bulbs is selected from the cartoon,
The probability of getting a non-defective bulb = c/a = 16/20 = 4/5 = 0.8
Answered by
40
probability=no of trials in which event E has happened /total no. of trials
so P(E)=16/20
WHICH IS ---- 4/5
SO PROBABILITY =4/5=0.8
so P(E)=16/20
WHICH IS ---- 4/5
SO PROBABILITY =4/5=0.8
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