(iii) Predict the power consumption for a temperature of 65°F. (iv) Compute the coefficient of determination and explain.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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iii and iv

(c) A pilot study was performed to investigate the effect of temperature, x (in degree
Fahrenheit) on the electrical power consumed, y (in Watt) by an automotive factory.
Other factors were kept constant and the data were collected from the study. The
summary of the data are given as follows:
n = 8, x = 401,
ΣΥΕ 2301 , Σ-295
x² =
2y? = 666509,
xy = 118652.
(i)
Compute the equation of the least squares regression line of y on x.
(ii)
Interpret the equation obtained in part (i).
(iii)
Predict the power consumption for a temperature of 65°F.
(iv) Compute the coefficient of determination and explain.
Transcribed Image Text:(c) A pilot study was performed to investigate the effect of temperature, x (in degree Fahrenheit) on the electrical power consumed, y (in Watt) by an automotive factory. Other factors were kept constant and the data were collected from the study. The summary of the data are given as follows: n = 8, x = 401, ΣΥΕ 2301 , Σ-295 x² = 2y? = 666509, xy = 118652. (i) Compute the equation of the least squares regression line of y on x. (ii) Interpret the equation obtained in part (i). (iii) Predict the power consumption for a temperature of 65°F. (iv) Compute the coefficient of determination and explain.
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