In Section 5.7.4, we discovered that the optimal level of advertising for Big Andy's Burger Barn, (A

Question:

In Section 5.7.4, we discovered that the optimal level of advertising for Big Andy's Burger Barn, $A D V E R T_{0}$, satisfies the equation $\beta_{3}+2 \beta_{4} A D V E R T_{0}=1$. Using a $5 \%$ significance level, test whether each of the following levels of advertising could be optimal:

(a) $A D V E R T_{0}=1.75$,

(b) $A D V E R T_{0}=1.9$, and

(c) $A D V E R T_{0}=2.3$. What are the $p$-values for each of the tests?

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