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. Hours spent studying, x 1 1 2 4 4 6 Test score, y 40 45 52 47 64 69 (a) x=3 hours (b) x=3.5 hours (c) x=12hours (d) x=1.5hours Find the regression equation. y=______ x = ( ) (Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.) Which graph is correct Graph attached: PICTURE ATTACHED (a) Predict the value of y for x=3. Choose the correct answer below. A. 55.2 B. 52.8 C. 45.6 D. not meaningful (b) Predict the value of y for x=3.5. Choose the correct answer below. A. 55.2 B. 96.0 C. 45.6 D. not meaningful (c) Predict the value of y for x=12. Choose the correct answer below. A. 55.2 B. 96.0 C. 52.8 D. not meaningful (d) Predict the value of y for x=1.5. Choose the correct answer below. A. 52.8 B. 45.6 C. 96.0 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.

Hours spent studying, x	1	1	2	4	4	6
Test score, y	40	45	52	47	64	69

(a) x=3 hours	(b) x=3.5 hours
(c) x=12hours	(d) x=1.5hours

Find the regression equation.

y=____________ x = ( ______)

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

Which graph is correct Graph attached:

PICTURE ATTACHED

(a) Predict the value of y for x=3.
Choose the correct answer below.

55.2

52.8

45.6

not meaningful

(b) Predict the value of y for x=3.5.

Choose the correct answer below.

55.2

96.0

45.6

not meaningful

(c) Predict the value of y for x=12.
Choose the correct answer below.

55.2

96.0

52.8

not meaningful

(d) Predict the value of y for x=1.5.
Choose the correct answer below.

52.8

45.6

96.0

not meaningful

(Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.)
Choose the correct graph below.
O A.
O B.
Oc.
D.
80-
80-
80-
80-
0-
8.
8
Hours studying
Hours studying
Hours studying
Hours studying
(a) Predict the value of y for x 3. Choose the correct answer below.
Click to select your answer(s).
Test score
Test score
of
Test score
aioos isa

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