A Researcher Believes That Response Time for Rats Is Effected

question 40

Short Answer

A researcher believes that response time for rats is effected by a certain drug. He looks at 36 rats and
compares their response times before and after taking the drug. The sum of positive ranks (before - after)
is 266 and negative ranks 400. Find the value of the test statistic.

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Definitions:

Statistical Tests

Mathematical procedures used in statistics to assess hypotheses or make inferences based on sample data.

Chance Fluctuation

Random variations or changes that occur without a specific cause or pattern, often used in statistical analysis.

Correlation Coefficients

Correlation coefficients are statistical measures that quantify the degree to which two variables are related or move together, indicating the strength and direction of their relationship.

Statistically Significant

A measure indicating that an observed effect is likely not due to chance alone.