Question

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 475 metric tons of lemon imports. Is the prediction​ worthwhile?

Lemon Imports	235	261	352	481	518
Crash Fatality Rate	16	15.8	15.5	15.5	15.1

Find the equation of the regression line.

ModifyingAbove y with caret

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 475 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 there appears to be an​ outlier, the prediction is not appropriate.

C.

Since common sense suggests there should not be much of a relationship between the two​ variables, the prediction does not make much sense.

D.

Since all of the requirements for finding the equation of the regression line are​ met, the prediction is worthwhile.

Answer 1