4. In the expressionPr(deny = 1|P/I Ratio, black) = (-2.26 +2.74P/I ratio + 0.71black),the effect of increasing the P/I ratio from 0.3 to 0.4 for a white persona. is 0.274 percentage points.b. is 6.1 percentage points.c. should not be interpreted without knowledge of the regression R².d. is 2.74 percentage points.5. Omitting relevant regressors from the model results in OLS estimators that are:a. biased but more precise.b. are both unbiased and more efficient.c. both biased and less efficient.d. None of the above

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Answered: 5. Omitting relevant regressors from…

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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The following partial ANOVA table is taken from an article in which the abilities of three different groups to identify a perceptual incongruity were assessed and compared. Al individuals in the experiment had been hospitalized to undergo psychiatric treatment. There were 35 individuals in the depressive group, 32 individuals in the functional "other" group, and 31 individuals in the brain-damaged group. Complete the ANOVA table and carry out the Ftest at level a- 01. (Give answers to 2 decimal places and the p-value to 3 decimal places.) Sum of Mean Square Source df Squares P-value Groups 76.61 Error Total 1127.02 Conclusion Reject the null hypothesis, there are significant differences between the means O Reject the null hypothesis, there are not significant differences between the means. O Fail to reject the null hypothesis, there are not significant differences between the means O Fail to reject the null hypothesis, there are significant differences between the means
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5. Omitting relevant regressors from the model results in OLS estimators that are: a. biased but more precise. b. are both unbiased and more efficient. c. both biased and less efficient. d. None of the above