The physical plant at the main campus of daily requests to replace florecent lightbu of daily requests is bell-shaped and has a r of 11. Using the 68-95-99.7 (Empirical) Rul percentage of lightbulb replacement reque The approximate percentage of lightbulb m between 20 and 53 is symbol.) Question Help: Video Submit Question
The physical plant at the main campus of daily requests to replace florecent lightbu of daily requests is bell-shaped and has a r of 11. Using the 68-95-99.7 (Empirical) Rul percentage of lightbulb replacement reque The approximate percentage of lightbulb m between 20 and 53 is symbol.) Question Help: Video Submit Question
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The physical plant at the main campus of a large state university recieves
daily requests to replace florecent lightbulbs. The distribution of the number
of daily requests is bell-shaped and has a mean of 53 and a standard deviation
of 11. Using the 68-95-99.7 (Empirical) Rule, what is the approximate
percentage of lightbulb replacement requests numbering between 20 and 53?
The approximate percentage of lightbulb replacement requests numbering
between 20 and 53 is
%. (Do not enter the percent
symbol.)
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Expert Solution

Step 1
Given that.
X~N( μ , ?)
μ=53 , ?=20
Z-score =( x - μ )/?
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