Solutions to Practice for Quiz 3

Solutions to Practice for Quiz 3 - Solutions to Practice...

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Unformatted text preview: Solutions to Practice for Quiz 3 y =- 2.3497 + 2.3611* RadioTV + 4.1831* Pr int -0.3489 * RadioTV * Pr int y =- 2.3497 + 2.3611* 2 + 4.1831* 5 -0.3489 * 2 * 5 =19.799 = $19799 H 0: = 2 = 3 = 0 1 ^ ^ a) H a: At Least one of them not equal to Zero F= 590.406 / 3 = 502.67 8.222 / 21 F0.05 =3.07 So, we reject H0 H0 : Ha = 0 3 : 0 3 - 0.3489 t = = 5.58 - d) 0.0626 - 0.05/ 2 = 2.08 t 21 - So, reject H0. It is important to include an interaction term in this model yy e) = b1 + b3* x2 = 2.3611 - 0.3489* x2 x1 ^ ...
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