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We have a box of 12 light bulbs. The probability that a particular light bulbs lights on opening is 0.95. This meets the binomial assumptions.

2. Find the probability that 9 light bulbs light up:
A 0.017 B 0.085 C 0.000 D 1.000

3. Find the probability that between 9 and 11 light:
A 0.440 B 0.460 C 0.002 0.458

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Category:- Statistics and Probability
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