When should a researcher decide whether an alternative hypothesis should be one-sided or two-sided?
A)Before collecting the data.
B)While the data are being collected, and a pattern begins to emerge.
C)After the data have been collected and the researcher has had a chance to summarize them to see what direction the results may take.
D)No single rule will apply to all situations; each one is different.

Question

Quizplus · Accepted Answer

The decision on whether an alternative hypothesis should be one-sided or two-sided must be made before collecting the data to avoid bias and ensure the integrity of the hypothesis testing process.

When Should a Researcher Decide Whether an Alternative Hypothesis Should