testing steps
The first step when you decide what you want to test
What is identifying a hypothesis?
The type of error that occurs when you reject a true null hypothesis.
What is a Type I error?
These numbers mark the point where results are considered extreme enough to reject the null hypothesis.
What are critical values?
This test is used when the population mean and standard deviation are known.
What is a z-test?
This type of test looks for any difference from the null hypothesis (greater or less than)
What is a two-tailed test?
This determines whether a test is one-tailed or two-tailed.
What is the alternative hypothesis?
This type of error occurs when you fail to reject a false null hypothesis.
What is a Type II error?
If your p-value is smaller than alpha, you should do this.
What is rejecting the null hypothesis?
This value compares the sample mean to the population mean in standard units.
What is a z-score (z statistic)?
This type of test looks for differences in a specific direction, most used when there is prior knowledge.
What is a one-tailed test?
A step that involves choosing the rule for rejecting or not rejecting the null hypothesis.
What is selecting a criterion (alpha level)?
This type of error occurs when you fail to reject a false null hypothesis.
What is power?
This is the range of test statistic values that leads you to reject the null hypothesis.
What is the rejection region?
This condition must be met to use a z-test instead of a t-test.
What is knowing the population mean and standard deviation?
This amount is placed into each tail when a two-tailed test has an a =.05
What is .025?
The step where sample data is used to determine the value of the test statistic.
What is computing the test statistic?
Another name for a Type I and Type II error.
What is a false positive? What is a false negative?
If your test statistic does not land in the rejection region, you do this.
What is fail to reject the null hypothesis?
This symbol represents the population standard deviation.
What is σ?
This type of hypothesis uses “≠” as its symbol
What is a nondirectional hypothesis
This final step determines whether you reject the null hypothesis.
What is comparing results and making a decision?
a Type III error
What error is it when you correctly reject the null hypothesis but incorrectly conclude the direction of the difference? (example: you are looking for one-tailed, but you use two-tailed.)
This decision rule tells you whether to reject the null hypothesis.
What is compare the test statistic to the critical value?
This is the known population mean symbol.
What is μ?
This type of test is most common in behavioral sciences.
What is a two-tailed test?