b) The American Automobile Association reports that the average time it takes to respond to an emergency call is 38 minutes. Assume the variable is approximately normally distributed and the standard deviation is 9.002 minutes. If 80 calls are randomly selected, approximately how many will be responded to in less than 15 minutes? How many will be responded to in 50 percent? How many will be 100 percent?
b) The American Automobile Association reports that the average time it takes to respond to an emergency call is 38 minutes. Assume the variable is approximately normally distributed and the standard deviation is 9.002 minutes. If 80 calls are randomly selected, approximately how many will be responded to in less than 15 minutes? How many will be responded to in 50 percent? How many will be 100 percent?
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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Part b
Transcribed Image Text:Q-2 a) A landscape contractor bids on jobs where he can make $3000 profit. The relative
frequency of getting 1, 2, 3, 4, 5,6,7,8 or 9 jobs per month are shown.
Number of jobs
Frequency
1 2 3
4 5 6 7 8 9
56 78
95 98 23 65 78 90 23
Find the contractor's expected profit per month. Also find out the deviation of the landscape
contractor.
b) The American Automobile Association reports that the average time it takes to respond to an
emergency call is 38 minutes. Assume the variable is approximately normally distributed and
the standard deviation is 9.002 minutes. If 80 calls are randomly selected, approximately how
many will be responded to in less than 15 minutes? How many will be responded to in 50
percent? How many will be 100 percent?
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