3
(a)
O
The table shows the percentage of the population not covered by health insurance in selected states for the years 1990 and 1999.
State
1990
1999
PLAY
Idaho
15.1
19.1
Illinois
10.9
14.1
STOP
Michigan
9.4
112
Montana New York
14.0
18.6
Use the data to develop a model (equation) relating the 1990 percentage (input) to the 1999 percentage (output). Round to the nearest hundredth
12.1
16.4
(b) Identify the correlation coefficient, r, for the last part. Round to the nearest 4 decimals. (type r=)