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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
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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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.) Question Help: Video Submit Question
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.) Question Help: Video Submit Question
Expert Solution
Step 1
Given that.
 
X~N( μ , ?)
 
μ=53     , ?=20
 
Z-score =( x - μ )/?
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