SOLUTION: Binomial and Normal Distribution
The life expectancy (in hours) of a fluorescent tube is normally distributed with a mean 5000 and a standard deviation 500. Find the probability
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The life expectancy (in hours) of a fluorescent tube is normally distributed with a mean 5000 and a standard deviation 500. Find the probability
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Question 746207: Binomial and Normal Distribution
The life expectancy (in hours) of a fluorescent tube is normally distributed with a mean 5000 and a standard deviation 500. Find the probability that a tube lasts for more than 8250 hours.
Thanks for your help again! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The life expectancy (in hours) of a fluorescent tube is normally distributed with a mean 5000 and a standard deviation 500. Find the probability that a tube lasts for more than 8250 hours.
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z(8250) = (8250-5000)/500 = 3250/500 = 6.5
P(x > 8250) = P(z > 6.5) = 4.036x10^-11
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Cheers,
Stan H.
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