A researcher is examining the relationship between stress levels and performance on a test of cognitive performance. She hypothesizes that stress levels lead to an increase in performance to a point, and then increased stress decreases performance. She tests 10 participants who have the following levels of stress:10.9412.767.628.177.8312.229.2311.1711.888.18When she tests their levels of mental performance, she finds the following cognitive performance scores (listed in the same participant order as above): 5.24 4.64 4.685.044.176.20 4.54 6.555.79 3.17Perform a linear regression to examine the relationship between these variables. What do the results mean? Linear Regression vModel Summary - V10.94ModelAdjusted R-RRRMSEHọ0.0000.0000.0002.091ANOVAModelSum of SquaresdfMean SquareFpNote. There is only an intercept model, no meaningful information can be shown.CoefficientsModelUnstandardizedStandard ErrorStandardizedHọ(Intercept)9.8960.69714.197<.001 Linear RegressionModel Summary - V5.24ModelRAdjusted RRMSEHo0.0000.0000.0001.080ANOVAModelSum of SquaresdfMean SquareFNote. There is only an intercept model, no meaningful information can be shown.CoefficientsModelUnstandardizedStandard ErrorStandardizedtpНо(Intercept)4.9330.36013.706<.001

Given, x y 10.94 5.24 12.76 4.64 7.62 4.68 8.17 5.04 7.83 4.17 12.22 6.2 9.23 4.54…

Answered: stress | bartleby

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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A researcher is examining the relationship between stress levels and performance on a test of cognitive performance. She hypothesizes that stress levels lead to an increase in performance to a point, and then increased stress decreases performance. She tests 10 participants who have the following levels of stress:

10.94

12.76

7.62

8.17

7.83

12.22

9.23

11.17

11.88

8.18

When she tests their levels of mental performance, she finds the following cognitive performance scores (listed in the same participant order as above):

5.24

4.64

4.68

5.04

4.17

6.20

4.54

6.55

5.79

3.17

Perform a linear regression to examine the relationship between these variables. What do the results mean?