In statistical hypothesis testing, which of the following occur before the data are collected? (Select all that apply.)
a. The beta (type II error) is set.
b. A power analysis is conducted.
c. The null hypothesis is accepted or rejected.
d. The alpha (type I error) is set.
e. The primary null hypothesis is stated.
ANS: A, B, D, E
The following steps outline each of the components of statistical hypothesis testing. The null hypothesis is stated. The study alpha (type I error) is set. The study beta (type II error) is set. A power analysis is performed. The study is conducted. The statistic is computed, based on the data obtained. The obtained statistic is compared with the critical value for the alpha chosen. If the obtained statistic is greater than the critical value, the null hypothesis is rejected; if the obtained statistic is less than the critical value, the null hypothesis is accepted.
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