Using output from the Regression and ANCOVA Quiz Output , by how much do exam score predictions change, for each 1 unit increase in hours spent revising? Assume that anxiety is held constant. (hint: you might like to practice using the regression formula to answer this question).

	a.	1.066
	b.	.821
	c.	.830
	d.	.883

Coefficients Standardized Unstandardized Coefficients Coefficients Correlations Model B Std. Error Beta Sig. Zero-order Partial Part 1 (Constant) 14.068 8.967 1.569 .135 hours spent revising 1.066 170 883 6.282 000 .821 .836 830 anxiety (1-100) .105 081 181 1.291 .214 -.118 299 171 a. Dependent Variable: exam score