Exhibit 15-8

question 115

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 are the hypotheses to test if the explanatory variables Bath and Sqft are jointly significant in explaining Rent?

• A) : Both of the coefficients are nonzero
• B) : At least one of the coefficients is zero
• C) : At least one of the coefficients is nonzero

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Definitions:

Breast

A complex tissue comprising mammary glands, fat, and connective tissue, functioning in milk production for offspring nourishment in mammalian females.

Hypothalamus

In vertebrates, part of the brain that helps regulate the internal environment of the body—for example, heart rate, body temperature, and water balance.

Estrogen

Female sex hormone that helps maintain sexual organs and secondary sex characteristics.

Cross-Linked Proteins

Proteins whose amino acid side chains form covalent bonds with each other, stabilizing their structure and affecting their properties.