Select the correct choice and then fill in the blank.
1. In a test of hypothesis, you have two competing hypotheses about a population _____ (parameter, statistic).
2. In a test of hypothesis, you actually test only the ______ (alternative, null) hypothesis.
3. A very important guideline for formulating the hypotheses for a test of hypothesis is that no information from the _____ (population, sample) is used in the hypotheses statements.