Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. 3 40 7 15 34 70 35 30 28 21 y LA USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 30 30 . 10 20 30 40 50 60 70 xaverage number 20 30 40 50 60 70 x(average number 10 20 30 40 50 60 70 x(average number 20 30 40 50 60 70 x(average number of employees) of employees) of employees) of employees) ® (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative low and negative moderate and negative strong and positive low and positive moderate and positive (c) Use a calculator to verify that Ex= 129, Ex2 = 6339, xy = 154, xy2 = 4950, and Exy = 3237. Computer. (Round your answer to four decimal places.) ra As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, y should tend to remain constant as x increases. Given our value of r, y should tend to increase as x increases. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to decrease as x increases. 10 10 @
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. 3 40 7 15 34 70 35 30 28 21 y LA USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 30 30 . 10 20 30 40 50 60 70 xaverage number 20 30 40 50 60 70 x(average number 10 20 30 40 50 60 70 x(average number 20 30 40 50 60 70 x(average number of employees) of employees) of employees) of employees) ® (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative low and negative moderate and negative strong and positive low and positive moderate and positive (c) Use a calculator to verify that Ex= 129, Ex2 = 6339, xy = 154, xy2 = 4950, and Exy = 3237. Computer. (Round your answer to four decimal places.) ra As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, y should tend to remain constant as x increases. Given our value of r, y should tend to increase as x increases. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to decrease as x increases. 10 10 @
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Help me answer part B and C
Transcribed Image Text:Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims.
x 3 7 15 34 70
40 35 30 28 21
y
LAUSE SALT
(a) Make a scatter diagram of the data and visualize the line you think best fits the data.
40
10
10 20 30 40 50 60
70
20 30 40 50 60 70
x(average number
20 30 40 50 60 70
x(average number
10 20 30 40 50
x(average number
of employees)
x (average number
of employees)
of employees)
of employees)
@o
6
(b) Would you say the correlation is low, moderate, or strong? positive or negative?
strong and negative
low and negative
moderate and negative
strong and positive
low and positive
moderate and positive
(c) Use a calculator to verify that Ex = 129, Ex2 = 6339, xy = 154, xy2 = 4950, and Exy = 3237. Computer. (Round your answer to four decimal places.)
r=
As x increases, does the value of r imply that y should tend to increase or decrease? Explain.
Given our value of r, y should tend to remain constant as x increases.
Given our value of r, y should tend to increase as x increases.
Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.
Given our value of r, y should tend to decrease as x increases.
10
60 70
@
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