A psychologist collected data on a person's age and the number of hours per week that person spent on the internet. The data are shown in the following cable. (a) Find the equation of a linear regression line for the data where age is the independent varlable, ×, and time Is the dependent varlable. (Round your numerical answers to three decimal places.) y= ? (b) Using the equation from part (a), estimate the number of hours a person 30 years old spends on the internet, (Round your answer to the nearest hour.) ? hr (c) Find the liner correlation coefficient. (Round your answer to the nearest four decimal places.) r= ?
A psychologist collected data on a person's age and the number of hours per week that person spent on the internet. The data are shown in the following cable. (a) Find the equation of a linear regression line for the data where age is the independent varlable, ×, and time Is the dependent varlable. (Round your numerical answers to three decimal places.) y= ? (b) Using the equation from part (a), estimate the number of hours a person 30 years old spends on the internet, (Round your answer to the nearest hour.) ? hr (c) Find the liner correlation coefficient. (Round your answer to the nearest four decimal places.) r= ?
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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A psychologist collected data on a person's age and the number of hours per week that person spent on the internet. The data are shown in the following cable.
(a) Find the equation of a linear regression line for the data where age is the independent varlable, ×, and time Is the dependent varlable. (Round your numerical answers to three decimal places.)
y= ?
(b) Using the equation from part (a), estimate the number of hours a person 30 years old spends on the internet, (Round your answer to the nearest hour.)
? hr
(c) Find the liner correlation coefficient . (Round your answer to the nearest four decimal places.)
r= ?
Transcribed Image Text:chologist collected data on a person's age and the
Age (years)
Time (hours)
74
0
66
2
63
4
56 48
6
8
47 38
10
12
33
14
25
22
14
16 18 20
whorn age is the independent variable, x,
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