Tamara Wants to Know How Many Subjects She Should Use

question 20

Multiple Choice

Tamara wants to know how many subjects she should use in her study. To answer this question, Tamara should

• A) calculate the study's effect size.
• B) use null hypothesis significance testing.
• C) conduct a power analysis.
• D) construct a BESD.

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Definitions:

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or parameter.

Student T Distribution

Student's t-distribution is a probability distribution used in statistics, especially for small sample sizes or unknown population variances, providing a basis for the estimation of population parameters.

Degrees of Freedom

The number of independent pieces of information that go into the estimation of a parameter or calculation of a statistic.

Normal Distribution

The probability distribution is evenly spread around the mean, signifying more frequent occurrences of data points near the mean than those that are more distant.