Anyone who has been outdoors on a summer evening has probably heard crickets. Did you know that it is possible to use the cricket as a thermometer? Crickets tend to chirp more frequently as temperatures increase. This phenomenon was studied in detail by George W. Pierce, a physics professor at Harvard. In the following data, x is a random variable representing chirps per second and y is a random variable representing temperature (°F). 16.6 81.4 20.3 14.7 16.8 73.0 20.6 93.5 18.2 86.3 15.5 75.2 17.1 82.0 X y y 89.4 69.7 15.0 79.6 17.2 17.0 83.5 15.4 16.2 83.3 16.0 80.6 14.4 76.3 y 69.4 82.6 n USE SALT Complete parts (a) through (e), given Ex = 251, Ey = 1205.8, Ex² = 4247.04, Ey² = 97,578.86, Exy = 20,322.37, and r 0.8325. (a) Draw a scatter diagram displaying the data. Graph Layers 100 After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill No Solution 76 70 65 O Help 13 14 15 16 17 18 19 20 21 22
Anyone who has been outdoors on a summer evening has probably heard crickets. Did you know that it is possible to use the cricket as a thermometer? Crickets tend to chirp more frequently as temperatures increase. This phenomenon was studied in detail by George W. Pierce, a physics professor at Harvard. In the following data, x is a random variable representing chirps per second and y is a random variable representing temperature (°F). 16.6 81.4 20.3 14.7 16.8 73.0 20.6 93.5 18.2 86.3 15.5 75.2 17.1 82.0 X y y 89.4 69.7 15.0 79.6 17.2 17.0 83.5 15.4 16.2 83.3 16.0 80.6 14.4 76.3 y 69.4 82.6 n USE SALT Complete parts (a) through (e), given Ex = 251, Ey = 1205.8, Ex² = 4247.04, Ey² = 97,578.86, Exy = 20,322.37, and r 0.8325. (a) Draw a scatter diagram displaying the data. Graph Layers 100 After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill No Solution 76 70 65 O Help 13 14 15 16 17 18 19 20 21 22
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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Question
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asnwer b and c pls
Transcribed Image Text:A USE SALT
Complete parts (a) through (e), given Ex = 251, Ey = 1205.8, Ex²
= 4247.04, Ey = 97,578.86, Exy = 20,322.37, and r= 0.8325.
%3D
(a) Draw a scatter diagram displaying the data.
100
Graph Layers
«
Clear All
After you add an object to the graph you
95
Delete
can use Graph Layers to view and edit its
properties.
90
Fill
85
80
No
Solution
75
70
65
Help
13
14
15
16
17
18
19
20
21
22
WebAssign. Graphing Tool
(b) Verify the given sums Ex, y, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.)
Σχ
Enter a number.
Ey
Σχ2
Ey?
Σχy
r =
(c) Find x, and y. Then find the equation of the least-squares line ŷ = a + bx. (Round your answer to four decimal places.)
ŷ =
+
" "||
I|||
I|||
O1x 1> <>
![8. [0.06/1 Points]
DETAILS
PREVIOUS ANSWERS
BBBASICSTAT8 4.2.018.S.
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Anyone who has been outdoors on a summer evening has probably heard crickets. Did you know that it is possible to use the cricket as a thermometer? Crickets tend to chirp more frequently as
temperatures increase. This phenomenon was studied in detail by George W. Pierce, a physics professor at Harvard. In the following data, x is a random variable representing chirps per second and y
is a random variable representing temperature (°F).
20.3
16.8
20.6
18.2
16.6
15.5
14.7
17.1
y
89.4
73.0
93.5
86.3
81.4
75.2
69.7
82.0
15.4
16.2
15.0
17.2
16.0
17.0
14.4
69.4
83.3
79.6
82.6
80.6
83.5
76.3
n USE SALT
Complete parts (a) through (e), given Ex = 251, Ey = 1205.8, Ex² = 4247.04, Ey² = 97,578.86, Exy = 20,322.37, and r = 0.8325.
(a) Draw a scatter diagram displaying the data.
100
Graph Layers
Clear All
After you add an object to the graph you
95
Delete
can use Graph Layers to view and edit its
properties.
90
Fill
85
80
No
Solution
75
70
65
Help
13
14
15
16
17
18
19
20
21
22
WebAssign. Graphing Tool
(b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5bfb450b-19b0-48ac-bae0-e87e7294f56b%2F90712e5e-04c6-427f-9618-6e585a93c2c9%2F6d1foy_processed.png&w=3840&q=75)
Transcribed Image Text:8. [0.06/1 Points]
DETAILS
PREVIOUS ANSWERS
BBBASICSTAT8 4.2.018.S.
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Anyone who has been outdoors on a summer evening has probably heard crickets. Did you know that it is possible to use the cricket as a thermometer? Crickets tend to chirp more frequently as
temperatures increase. This phenomenon was studied in detail by George W. Pierce, a physics professor at Harvard. In the following data, x is a random variable representing chirps per second and y
is a random variable representing temperature (°F).
20.3
16.8
20.6
18.2
16.6
15.5
14.7
17.1
y
89.4
73.0
93.5
86.3
81.4
75.2
69.7
82.0
15.4
16.2
15.0
17.2
16.0
17.0
14.4
69.4
83.3
79.6
82.6
80.6
83.5
76.3
n USE SALT
Complete parts (a) through (e), given Ex = 251, Ey = 1205.8, Ex² = 4247.04, Ey² = 97,578.86, Exy = 20,322.37, and r = 0.8325.
(a) Draw a scatter diagram displaying the data.
100
Graph Layers
Clear All
After you add an object to the graph you
95
Delete
can use Graph Layers to view and edit its
properties.
90
Fill
85
80
No
Solution
75
70
65
Help
13
14
15
16
17
18
19
20
21
22
WebAssign. Graphing Tool
(b) Verify the given sums Ex, Ey, Ex², Ey², Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.)
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