Statistics

Statistics

Ch. 8 Matching

Match the correct test with the definition:

One-sample test Two-sample test

Z-test T-test F-test

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Paired test

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Compare the sample to the population from which the hypothesis is drawn.

Also referred to the analysis of variance (ANOVA). F-tests are used to determine whether groupings of data by category are meaningful.

Compare two samples, typically experimental and control samples.

Compare the means of the data where normality and standard deviation may not be known; these are more relaxed statistical conditions. Compare two samples where it is impossible to control all variables that may influence the results. Compare the means of the data where normality and standard deviation are known; these are more tightly controlled statistical conditions.

Chapter 8 Practice Problems

Complete the following practice problems to test your understanding. Check your work with the solutions provided. You have been selected to sit on the jury of an individual accused of murder. Answer the following questions:

1. What is the null hypothesis?

2. What is the alternative hypothesis?

3. What is the outcome if the null is incorrect?

4. What is the outcome if the alternative is correct?

Answer key is found on page 84.

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