martinperezb3665 martinperezb3665

13-08-2024
Mathematics

Answered

The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 2000 hours and a standard deviation of 65 hours. Out of 590 freshly installed light bulbs in a new large building, how many would be expected to last less than 1850 hours, to the nearest whole number?

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