Question

test the hypothesis that x1 and x2 have zero influence on y​

Answer 1

Answer:

tests are used to conduct hypothesis tests on the regression coefficients obtained in simple linear regression. A statistic based on the t\,\! distribution is used to test the two-sided hypothesis that the true slope, \beta_1\,\!, equals some constant value, \beta_{1,0}\,\!.

Answer 2

Explanation:

Fit the linear regression model with y = yield and (in order) x 2 and x 3 and x 1 = nit as predictors. (In Minitab click "Model" and use the arrows ...