In the linear model $Y = a + b X + c Z$ , a test of the hypothesis that parameter c equals zero is A) an F-test. B) an R²-test. C) a zero-statistic. D) a t-test. E) a Z-test.

Name: In the linear model $Y = a + b X + c Z$ , a test of the hypothesis that parameter c equals zero is A) an F-test. B) an R 2 -test. C) a zero-statistic. D) a t-test. E) a Z-test.
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A t-test is used to test the hypothesis that a single coefficient (like c) in a linear regression model is equal to zero.

In the Linear Model Y=a+bX+cZY = a + b X + c ZY=a+bX+cZ

In the Linear Model $Y = a + b X + c Z$