Probability that randomly selected bulb will fail in hours

Reference no: EM13135908

Mean life of electric bulbs produced by a company is 1500 hours with a standard deviation of 300 hours. Assuming that the life of bulbs follow Normal distribution, what is the probability that a randomly selected bulb will:

i) Fail within 1200 hours?

ii) Survive between 1350 and 1650 hours?

iii) Survive beyond 1950 hours?

9. Write short notes on Normal distribution

Reference no: EM13135908

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