Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted and fuel wasted. Let x represent the average annual hours per person spent in traffic delays and let y represent the average annual gallons of fuel wasted per person in traffic delays. A random sample of eight cities showed the following data. x (hr). Ly (gal) 46 27 5 22 36 18 21 16 5 3 33 54 31 38 27 9 (a) Draw a scatter diagram for the data. leo Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. 45 Fill 40 30 as No Selution 20 15 25 Help WebAssign. Graphing Tool Verify that Σχ 150, Σχ23580, Σy =241, Σν29345, and Σχy= 5760. Compute r. The data in part (a) represent average annual hours lost per person and average annual gallons of fuel wasted per person in traffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each city and measured the annual number of hours lost x for that person and the annual gallons of fuel wasted y for the same person. x (hr). 21 4 20 42 16 26 2 38 L y (gal). 61 8 11 51 22 30 4 70 (b) Compute x and y for both sets of data pairs and compare the averages. y Data 1 Data 2 Compute the sample standard deviations sx and sy for both sets of data
Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted and fuel wasted. Let x represent the average annual hours per person spent in traffic delays and let y represent the average annual gallons of fuel wasted per person in traffic delays. A random sample of eight cities showed the following data. x (hr). Ly (gal) 46 27 5 22 36 18 21 16 5 3 33 54 31 38 27 9 (a) Draw a scatter diagram for the data. leo Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. 45 Fill 40 30 as No Selution 20 15 25 Help WebAssign. Graphing Tool Verify that Σχ 150, Σχ23580, Σy =241, Σν29345, and Σχy= 5760. Compute r. The data in part (a) represent average annual hours lost per person and average annual gallons of fuel wasted per person in traffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each city and measured the annual number of hours lost x for that person and the annual gallons of fuel wasted y for the same person. x (hr). 21 4 20 42 16 26 2 38 L y (gal). 61 8 11 51 22 30 4 70 (b) Compute x and y for both sets of data pairs and compare the averages. y Data 1 Data 2 Compute the sample standard deviations sx and sy for both sets of data
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:Fuming because you are stuck in traffic? Roadway congestion is a costly
item, both in time wasted and fuel wasted. Let x represent the average
annual hours per person spent in traffic delays and let y represent the
average annual gallons of fuel wasted per person in traffic delays. A random
sample of eight cities showed the following data.
x (hr).
Ly (gal) 46
27 5 22 36 18 21 16 5
3 33 54
31
38
27 9
(a) Draw a scatter diagram for the data.
leo
Graph Layers
After you add an object to the graph you
can use Graph Layers to view and edit its
properties.
45
Fill
40
30
as
No
Selution
20
15
25
Help
WebAssign. Graphing Tool
Verify that Σχ 150, Σχ23580, Σy =241, Σν29345, and Σχy=
5760.
Compute r.
The data in part (a) represent average annual hours lost per person and
average annual gallons of fuel wasted per person in traffic delays. Suppose
that instead of using average data for different cities, you selected one
person at random from each city and measured the annual number of hours
lost x for that person and the annual gallons of fuel wasted y for the same
person.
x (hr).
21 4 20 42
16 26 2 38
L
y (gal).
61 8 11 51 22 30 4 70
(b) Compute x and y for both sets of data pairs and compare the
averages.
y
Data 1
Data 2
Compute the sample standard deviations sx and sy for both sets of data
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