A two-tailed test is used only: a. when it is theoretically possible for the mean to...
A two-tailed test is used only:
a. when it is theoretically possible for the mean to be either higher or lower than the test value.
b. when there is strong empirical or theoretical reason to predict the mean will be higher than the test value.
c. to minimize the possibility of making a Type I error.
d. for tests where rejecting the null hypothesis is the desired outcome
Homework Answers
Correct Answer: "a. when it is theoretically possible for the mean to be either higher or lower than the test value."
Explanation
A two tailed test is used when re interested in determining whether test value is equal to or not equal to the required value. You are not interested in knowing whether or not test value is greater or smaller than the required value.
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