In: Statistics and Probability
Find the regression equation, letting the first variable be the predictor (x) variable. Using the listed lemon/crash data, where lemon imports are in metric tons and the fatality rates are per 100,000 people, find the best predicted crash fatality rate for a year in which there are 450 metric tons of lemon imports. Is the prediction worthwhile?
Lemon Imports 231 268 350 461
550
Crash Fatality Rate 15.9 15.6
15.2 15.3 15
Find the equation of the regression line.
y =_______+_______x (Round the constant three decimal places as
needed. Round the coefficient to six decimal places as
needed.)
The best predicted crash fatality rate for a year in which there
are 450 metric tons of lemon imports is ______fatalities per
100,000 population.
(Round to one decimal place as needed.)
Is the prediction worthwhile?
A. Since the sample size is small, the prediction is not appropriate.
B. Since common sense suggests there should not be much of a relationship between the two variables, the prediction does not make much sense.
C. Since all of the requirements for finding the equation of the regression line are met, the prediction is worthwhile.
D. Since there appears to be an outlier, the prediction is not appropriate.