Suppose the p-value for your hypothesis test for a difference of two means was .001 . Which of the following is an appropriate conclusion?
a. You reject the null hypothesis.
b. If there really was no difference in the population means, we would see results as extreme as these only .1 of the time.
c. You conclude that there is a statistically significant difference between the population means.
d. All of the above.
Question 2
What do we call a hypothesis test when the alternative hypothesis includes a possible difference in either direction?
a. A two-direction test.
b. A two-sided test.
c. A test that is not possible to conduct.
d. None of the above.
The trophic cascade hypothesis.
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