In the regression model ,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.

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A test of the hypothesis that a parameter equals zero in a regression model is typically done using a t-test. This involves calculating the t-statistic for the parameter estimate and comparing it to a t-distribution with the appropriate degrees of freedom. An F-test would be used to test for the overall significance of the model or a subset of parameters, while a Z-test would only be appropriate if the parameter had a known population standard deviation. The R²-test and zero-statistic are not commonly used statistical tests.

In the Regression Model ,A Test of the Hypothesis