10. Table 4.31 gives the relationship between the total number of firearms (TFA) and the number of aggravated assaults with firearms (AWF) in 4 US states and the District of Columbia in 2010.
Table 4.31
DC TN DE SC GA
TFA 2268 13132 1701 8137 11728
AWF 606 8231 824 5274 5160
The regression line is AWF = -361.102 + 0.5925 TFA, and the linear correlation coefficient is r = 0.9575.
a) What are the predictor and response variables?
predictor: AWF
response: TFA
b) Estimate the number of aggravated assaults with firearms if the total number of firearms is 5000. If the estimate is not possible, explain why not.
2,601.398
c) Estimate the number of aggravated assaults with firearms if the total number of firearms is 400. If the estimate is not possible, explain why not.
-124.102, it is not possible because it is a negative number
d) Estimate the number of firearms if the number of aggravated assaults is 720. If the estimate is not possible, explain why not.
65.498
1 answer
1 answer