Refer to the previous exercise.
a. The correlation equals -0.890 between x and y, and -0.997 between x and log(y). What does this tell you about which model is more appropriate?
b. The half-life is the time for the weight remaining to be one-half of the original weight. Use the equation = 80.6(0.813)x to predict the half-life of this organic material.

Transcribed Image Text:

0 75.0 1 60.9 2 51.8 3 45.2 4 34.7 5 34.6 6 26.2 7 20.4 8 14.0 9 12.3 11 8.2 15 3.1 20 1.4