Twenty Randomly Selected Statistics Students Were Given 15 Multiple Choice

question 59

Multiple Choice

Twenty randomly selected statistics students were given 15 multiple choice questions and 15 open-ended questions,all on the same material. The professor was interested in determining if students scored higher on the multiple choice questions. This experiment is an example of ________.

• A)a one-sample test of means
• B)a two-sample test of means
• C)a paired t-test
• D)a test of proportions

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Definitions:

F-ratio

A statistical measure used in analysis of variance (ANOVA) to determine the degree of variation between sample means in comparison to variation within the samples.

Critical Value

A point on the test distribution that is compared to the test statistic to decide whether to reject the null hypothesis.

Degrees of Freedom

Refers to the number of independent values or quantities which can be assigned to a statistical distribution or a statistical test.

DfBG

Degree of Freedom Between Groups, a statistical parameter used in ANOVA to determine the variability among group means.