O An electrical firm manufactures light bulbs that have a length of life tha is normally distributed with mean equal to (800) hours and a standard deviation of (40) hours. Find the probabilitythat a bulbo burns between-778 and 834 hours?

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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O An electrical firm manufactures light
bulbs that have a length of life that
is normally distributted with mean
equal to (800) hours and a standard
deviation of (40) hours. Find the
probabilitythat a bullb burns
between 778 and. 834 hours?
Transcribed Image Text:O An electrical firm manufactures light bulbs that have a length of life that is normally distributted with mean equal to (800) hours and a standard deviation of (40) hours. Find the probabilitythat a bullb burns between 778 and. 834 hours?
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