Exhibit 15-8

Multiple Choice

Exhibit 15-8.A real estate analyst believes that the three main factors that influence an apartment's rent in a college town are the number of bedrooms,the number of bathrooms,and the apartment's square footage.For 40 apartments,she collects data on the rent (y,in $) ,the number of bedrooms (x₁) ,the number of bathrooms (x₂) ,and its square footage (x₃) .She estimates the following model: .The following table shows a portion of the regression results. Refer to Exhibit 15-8.Which of the following is the value of the test statistic for testing the joint significance of the linear regression model?

A) 1.59
B) 2.22
C) 3.75
D) 50.88