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:

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.CR: Chapter 13 Review

Problem 58CR

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Transcribed Image Text: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: d. What percentage of the light bulbs will last between 1563 and 1648 hours? ANS: e. What percentage of the light bulbs will last less than 1410 hours? ANS:

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