Question: A regression equation that describes the relationship between the time spent writing a paper ( y ) in hours and length of paper ( x ) in pages is found below.

The regression equation of the line is: Time = 1.3 + 1.2 Length

1. Interpret the slope in terms of how time spent writing a paper changes as length of paper increases. Be specific.
2. Does the y -intercept have a logical interpretation in the context of this problem? (Hint: use Figure A.4 to help make this decision.) Explain.
3. Use the regression plot found below (Figure A.4) to predict approximately how long it would take to finish a paper that is 10 pages in length. Do not use the equation.
4. Can the regression equation be used to predict how long it would take to complete a paper that is 40 pages in length? Explain.
5. The correlation between the two variables is .917 with a p -value of .0004. What conclusion can be made about the relationship between length of paper and amount of time it takes to complete a paper?
6. Suppose the point ( x , y ) = (25 pages, 35 hours) was removed from the regression plot found below. Would the correlation stay the same, increase, or decrease? Explain.

Price: $2.99

Solution: The downloadable solution consists of 3 pages
Deliverable: Word Document