Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. Ý = 10 - 0.9X; ( ... a. Interpret the meaning of the Y-intercept, b,. Choose the correct answer below. O A. The Y-intercept, bo = - 0.9, implies that when the value of X is the mean value of Y is -0.9. O B. The Y-intercept, bo = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units. Oc. The Y-intercept, bo = 10, implies that when the value of X is 0, the mean value of Y is 10. O D. The Y-intercept, b, = 10, implies that the average value of Y is 10. b. Interpret the meaning of the slope, b, . Choose the correct answer below. O A. The slope, b, = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units. B. The slope, b, = - 0.9, implies that for each increase of 1 unit in X, the value of Y is estimated to decrease by 0.9 units. O C. The slope, b, = 0.9, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 0.9 units. O D. The slope, b, = - 0.9, implies that the average value of Y is - 0.9. c. Predict the mean value of Y for X = 7. Y =(Type an integer or a decimal.)
Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below. Ý = 10 - 0.9X; ( ... a. Interpret the meaning of the Y-intercept, b,. Choose the correct answer below. O A. The Y-intercept, bo = - 0.9, implies that when the value of X is the mean value of Y is -0.9. O B. The Y-intercept, bo = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units. Oc. The Y-intercept, bo = 10, implies that when the value of X is 0, the mean value of Y is 10. O D. The Y-intercept, b, = 10, implies that the average value of Y is 10. b. Interpret the meaning of the slope, b, . Choose the correct answer below. O A. The slope, b, = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units. B. The slope, b, = - 0.9, implies that for each increase of 1 unit in X, the value of Y is estimated to decrease by 0.9 units. O C. The slope, b, = 0.9, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 0.9 units. O D. The slope, b, = - 0.9, implies that the average value of Y is - 0.9. c. Predict the mean value of Y for X = 7. Y =(Type an integer or a decimal.)
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:Fitting a straight line to a set of data yields the following prediction line. Complete (a) through (c) below.
Ý = 10 - 0.9X;
.....
a. Interpret the meaning of the Y-intercept, bo. Choose the correct answer below.
O A. The Y-intercept, bo = - 0.9, implies that when the value of X is
the mean value of Y is - 0.9.
O B. The Y-intercept, bo = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units.
Oc. The Y-intercept, b, = 10, implies that when the value of X is 0, the mean value of Y is 10.
O D. The Y-intercept, bo = 10, implies that the average value of Y is 10.
b. Interpret the meaning of the slope, b, . Choose the correct answer below.
O A. The slope, b, = 10, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 10 units.
B. The slope, b, = - 0.9, implies that for each increase of 1 unit in X, the value of Y is estimated to decrease by 0.9 units.
O C. The slope, b, = 0.9, implies that for each increase of 1 unit in X, the value of Y is expected to increase by 0.9 units.
O D. The slope, b, = - 0.9, implies that the average value of Y is - 0.9.
c. Predict the mean value of Y for X = 7.
Y =(Type an integer or a decimal.)
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