in a lot of 1000 bulbs ,20 are defective. what is the probability that a bulb chosen at random is not defective
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Answered by
3
Step-by-step explanation:
no. of defective bulbs=20
total no. of bulbs=1000
no. of bulbs not defective= 1000-20 = 980
p(getting a bulb not defective)= 980÷1000 = 0.98
Answered by
0
Step-by-step explanation:
980/1000
495/500
99/100
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