Question 48 2 pts The relationship between the number of beers consumed (X) and blood alcohol content (Y) was studied in male college students by...
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Screen Shot 2019-12-11 at 9.24.54 AM.png

Question 48 2 pts The relationship between the number of beers consumed (X) and blood alcohol content (Y) was
studied in male college students by using least squares regression. The following regression
equation was obtained from this study: Y—hat=—0.0127+0.0180X. The legal limit to drive is a blood alcohol content (BAC) of less than .08. If a student consumed 5 beers the model predicts that his BAC should be approximately equal to: /‘\ .09 above the legal limit
C .0027 below the legal limit
C .0027 above the legal limit C .0733 above the legal limit

Screen Shot 2019-12-11 at 9.26.07 AM.png

Question 49 2 pts The relationship between the number of beers consumed (X) and blood alcohol content (Y) was
studied in male college students by using least squares regression. The following regression
equation was obtained from this study: Y—hat=—0.0127+0.0180X. The legal limit to drive is a blood alcohol content (BAG) of less than .08. After consuming 5 beers,
one student had a BAC of.09. What is the residual for this student?

Screen Shot 2019-12-11 at 9.27.06 AM.png

Question 50
2 pts
The slope of the regression line
is denoted by
is always positive
means that if X increases by 1 unit, Y increases by
O is the value of Y when X=0

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