The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1500 hours and a standard deviation of 40 hours. Out of 545 freshly installed light bulbs in a new large building, how many would be expected to last between 1430 hours and 1540 hours, to the nearest whole number?
The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1500 hours and a standard deviation of 40 hours. Out of 545 freshly installed light bulbs in a new large building, how many would be expected to last between 1430 hours and 1540 hours, to the nearest whole number?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 4CYU
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The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1500 hours and a standard deviation of 40 hours. Out of 545 freshly installed light bulbs in a new large building, how many would be expected to last between 1430 hours and 1540 hours, to the nearest whole number?
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