Answered: d. Identify the predictor and response…

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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(QUESTIONS A-C HAVE BEEN ANSWERED, PLEASE ANSWER D-E)

An instructor asked a random sample of eight students to record their study times at the beginning of a course. She then made a table for total hours studied (x) over 2 weeks and test score (y) at the end of the 2 weeks. The table is given below. Complete parts (a) through (f).

x	9	13	10	18	6	18	14	23
y	94	82	80	76	85	82	88	77

y = _____ + (___________)x

(round to two decimal places as needed)

b. Graph the regression equation and the data points.

c. Describe the apparent relationship between the two variables.

A. Test Score does not appear to change as Hours Studied increases.

B. Test Score tends to increase as Hours Studied increases.

C. Test Score tends to decrease as Hours Studied increases.

D. There is no apparent relationship between Test Score and Hours Studied.

a. Find the regression equation for the data points.

d. Identify the predictor and response variables.

A. The predictor variable is Number of Students and the response variable is Hours Studied.

B. The predictor variable is Number of Students and the response variable is Test Score.

C. The predictor variable is Test Score and the response variable is Hours Studied.

D. The predictor variable is Hours Studied and the response variable is Test Score.

e. Identify outliers and potential influential observations.

A.There are no outliers and there is one influential observation.

B.There are no outliers and no influential observations.

C.There is one outlier and there are no influential observations.

D. There is at least one outlier and at least one influential observation.

f. Predict the score for a student that studies for 13 hours.

The predicted score is ___________ (round to the nearest whole number as needed)

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