Weighing the Evidence When We Set Up Statistical Tests, We

question 67

Multiple Choice

Weighing the Evidence When we set up statistical tests, we assume that

• A)the alternative hypothesis is true.
• B)the independent variable had no effect.
• C)Type 1 errors are less costly than Type 2 errors.
• D)variability is different within each treatment group.

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Definitions:

Two-tailed

A test of significance that checks for the possibility of either a positive or negative effect and doubles the significance level.

Critical Value

A threshold in hypothesis testing that determines the boundary for rejecting the null hypothesis, based on the chosen significance level.

Two-tailed

A test of significance that considers the possibility of both an increase and a decrease in the measured variable, effectively doubling the critical regions for a given alpha level.

Statistical Analysis

A process that involves collecting, interpreting, presenting, and modeling data to uncover patterns or insights.