The Accompanying Table Shows the Regression Results When Estimating Y

question 65

Multiple Choice

The accompanying table shows the regression results when estimating y = β₀ + β₁x₁ + β₂x₂ + β₃x₃ + ε. When testing whether or not x₁ and x₂ have the same influence on y, the null hypothesis is ________.

• A) H₀: β₁ = β₂
• B) _H0: β₁ ≠ β₂
• C) _H0: β₁ + β₂ = β₃
• D) _H0: β₁ + β₂ = 0

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Definitions:

Continuous Variable

A type of variable that can take an infinite number of values within a given range.

Categorical Variable

A variable that can take on a limited, and usually fixed, number of possible values, grouping individuals into categories.

Random Group Assignment

A method in experimental design to ensure every participant has an equal chance of being assigned to any group, thus minimizing preexisting differences between those assigned to different groups.

Construct

An abstract concept that is specifically chosen or created to explain a given phenomenon.