Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below. font size decreased by 1 font size increased by 1 Hours spent studying comma xHours spent studying, x 0 1 3 3 5 5 (a) xequals=2 hours (b) xequals=2.52.5 hours Test score, y 40 43 52 48 62 67 (c) xequals=15 hours (d) xequals=1.51.5 hours Find the regression equation. ModifyingAbove y with caretyequals=nothingxplus+left parenthesis nothing right parenthesis (Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.) (a) Predict the value of y for xequals=2. Choose the correct answer below. A. 50.3 B. 47.8 C. 45.3 D. not meaningful (b) Predict the value of y for xequals=2.5. Choose the correct answer below. A. 50.3 B. 112.7 C. 45.3 D. not meaningful (c) Predict the value of y for xequals=15. Choose the correct answer below. A. 50.3 B. 47.8 C. 112.7 D. not meaningful (d) Predict the value of y for xequals=1.5. Choose the correct answer below. A. 47.8 B. 112.7 C. 45.3 D. not meaningful

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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Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below.

font size decreased by 1 font size increased by 1 Hours spent studying comma xHours spent studying, x	0	1	3	3	5	5		(a) xequals=2 hours	(b) xequals=2.52.5 hours
Test score, y	40	43	52	48	62	67		(c) xequals=15 hours	(d) xequals=1.51.5 hours

Find the regression equation.

ModifyingAbove y with caretyequals=nothingxplus+left parenthesis nothing right parenthesis

(Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.)

(a) Predict the value of y for

xequals=2.

Choose the correct answer below.

50.3

47.8

45.3

not meaningful

(b) Predict the value of y for

xequals=2.5.

Choose the correct answer below.

50.3

112.7

45.3

not meaningful

xequals=15.

Choose the correct answer below.

50.3

47.8

112.7

not meaningful

(d) Predict the value of y for

xequals=1.5.

Choose the correct answer below.

47.8

112.7

45.3

not meaningful

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