The use of a directional alternative hypothesis increases the statistical power of a hypothesis test by making it more likely to reject the null hypothesis when it is false. Yet it has a major...

The use of a directional alternative hypothesis increases the statistical power of a hypothesis test by making it more likely to reject the null hypothesis when it is false. Yet it has a major disadvantage because of the following reason:

a. A large difference in the opposite direction is still considered inconclusive.

b. It is a negative way of approaching.

c. It is an assumption on the part of the researcher.

d. Only the null hypothesis is neutral.