A random sample of 20 individuals who graduated from college five years ago were asked to report ...

      A random sample of 20 individuals who graduated from college   five years ago were asked to report the total amount of debt (in $) they had   when they graduated from college and the total value of their current   investments (in $) resulting in the data set below.   Debt Invested   6865 54613   12870 42015   16594 38949   3346 65439   3093 61801   14373 38200   8038 49813   18041 35515   22209 24488   9711 48925   20841 28922   12588 43494   15944 38932   20602 27374   15693 37278   23457 24720   11378 48766   3721 60670   20438 25365   8662 50303       1)Develop a   regression equation for predicting current investment based on college debt.   What is the expected change in current investment for each additional dollar   of college debt? Give your answer to four decimal places.    2)What is   the predicted current investment for an individual who had a college debt of   $5000? Give your answer to two decimal places.   3)What   proportion of the variation in current investment is explained by college   debt? Give your answer to four decimal places.