The following rates are for all deaths from firearms per 100,000 persons in the United States for the years 1985-1995. The information was taken from the National Center for Health Statistics, Health, United States 1996-97 and Injury Chartbook.
|
Year
|
Death Rate from Firearms
|
|
1985
|
18.3
|
|
1986
|
19.7
|
|
1987
|
19.1
|
|
1988
|
20.5
|
|
1989
|
21.4
|
|
1990
|
23.6
|
|
1991
|
25.2
|
|
1992
|
24.9
|
|
1993
|
26.4
|
|
1994
|
26.0
|
|
1995
|
23.4
|
(a) State which model (single-sample or fixed-X) this data set is.
(b) Plot a scatter diagram and compute the regression line.
(c) Compute 95% confidence intervals for β and test the H0 : β = 0.