14-96
-----
a. No.


14-99
-----
a. Yes, it looks reasonable because the scatter plot looks like a straight line.
b. 0.952
c. 95.22% of the spread in high temperatures can be explained by the spread in low temperatures.
d. The regression equation appears to be very useful for predicting the high temperature given the low temperature.


14-101
------
a. No.


14-104
------
a. Yes, it looks reasonable because the scatter plot looks like a straight line.
b. 0.627
c. 62.7% of the variation in percent of body fat can be determined by the variation in age.
d. This equation is only moderately useful, and is not very accurate.




EXAMINE "According to Communications industry Forecast & Report, ..." (on one of given assignment worksheets). Should be able to work said problem in 3 minutes, given you already have your calculator out.