Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally distributed, with a mean life of 1300 hr and a standard deviation of 50 hr. If 60,000 of these bulbs are produced, how many can be expected to last at least 1300 hr?
Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally distributed, with a mean life of 1300 hr and a standard deviation of 50 hr. If 60,000 of these bulbs are produced, how many can be expected to last at least 1300 hr?
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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Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally distributed , with a mean life of
1300 hr and a standard deviation of 50 hr.
If 60,000 of these bulbs are produced, how many can be expected to last at least 1300 hr?
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