Question

The lifetime of a particular component is normally distributed with a mean of 1000 hours and...

The lifetime of a particular component is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the probability that a randomly drawn component will last between 800 and 950 hours.

Question 12 options:

0.9378

0.2857

0.6687

0.3784
Math   Statistics-And-Probability   
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Answer #1

2nd option is right that is 0.2857

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