When Should a Left-Tailed Significance Test Be Used?
A)When Economic $\beta$

Multiple Choice

When should a left-tailed significance test be used?

A) When economic theory suggests the coefficient should be positive
B) When it allows you to reject the null hypothesis at a lower p-value
C) When economic theory suggests the coefficient should be negative
D) When you know the true value of $\beta$ ₂ is positive.