Question: b) Test whether the second-order terms are signicant at a 5% level of significance. Report the null hypothesis, the value of the test statistic, the

b) Test whether the second-order terms are signicant at a 5%

b) Test whether the second-order terms are signicant at a 5% level of significance. Report the null hypothesis, the value of the test statistic, the critical value(s), and the decision. Which model is preferred (null or full)? Justify your answer. \"Hint\": Is the interaction term a first or a second order term

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