A Researcher Is Investigating Possible Explanations for Deaths in Traffic

Multiple Choice

A researcher is investigating possible explanations for deaths in traffic accidents.He examined data from 1991 for each of the 50 states plus Washington,DC.The data included information on the following variables. As part of his investigation he ran the multiple regression model, Deaths = ₀ + ₁(Children) + ₂(Income) + _i,
Where the deviations _i were assumed to be independent and Normally distributed with a mean of 0 and a standard deviation of .This model was fit to the data using the method of least squares.The following results were obtained from statistical software. What is a 99% confidence interval for ₂,the coefficient of the variable income?

A) -0.039 ± 0.030
B) -0.039 ± 0.040
C) 0.015 ± 0.079
D) 0.015 ± 0.104