Question

Question 21 8 pts Based on the information in the following coefficients table: Unstandardized Standardized Coefficients Coefficients B Std. Error Beta t Sig. (Constant) 1.044 0.22 4.749 0.51 -0.131 0.047 -0.236 -2.8 0.006 Number of Distractions (d) 0.515 0.08 0.541 6.413 0.001 Hours of Sleep (s) Dependent variable: Memory Score a) Create the corresponding regression equation. b) Interpret the slope for number of distractions (use the abbreviations provided). c) Is the slope for hours of sleep significantly different from 0? How do you know? (answer both parts of c)

Answer 1

a.

Yhat = 1.044 - 0.131 X1 + 0.515 X2

b.

For one unit change in number of distractions the average reduce in Memory score is -0.131 keeping hours of sleep constant.

c.

Yes, hours of sleep is significantly different from zero because p value for hours of sleep is less than 0.05.

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