An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 800 hours and a standard deviation of 40 hours. Find the probability that a bulb burns between 778 and 834 hours. O 0.08452 0.07845 0.09876 0.05111

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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An electrical firm manufactures light bulbs that have a length of life that is normally distributed
with mean equal to 800 hours and a standard deviation of 40 hours. Find the probability that a
bulb burns between 778 and 834 hours.
O 0.08452
0.07845
0.09876
0.05111
Transcribed Image Text:An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 800 hours and a standard deviation of 40 hours. Find the probability that a bulb burns between 778 and 834 hours. O 0.08452 0.07845 0.09876 0.05111
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