Fill in the blanks: The life expectancy of a brand of light bulbs is normally distributed with a mean of 1500 hours and a standard deviation of 75 hours. a. What is the probability that a bulb will last between 1500 and 1650 hours? ANS: b. What percentage of the light bulbs will last between 1485 and 1500 hours? ANS: c. What percentage of the light bulbs will last between 1416 and 1677 hours? ANS:

Fill in the blanks: The life expectancy of a brand of light bulbs is normally distributed with a mean of 1500 hours and a standard deviation of 75 hours. a. What is the probability that a bulb will last between 1500 and 1650 hours? ANS: b. What percentage of the light bulbs will last between 1485 and 1500 hours? ANS: c. What percentage of the light bulbs will last between 1416 and 1677 hours? ANS:

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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