Research Methods for the Behavioral Sciences

Charles Stangor

Chapter 8 Hypothesis Testing and Inferential Statistics - all with Video Answers

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Chapter Questions

Problem 1

With reference to the flow chart in Figure 8.1, use your own words to describe the procedures of hypothesis testing. Be sure to use the following terms in your explanation: alpba, beta, null bypothesis, probability value, statistical significance, and Type 1 and Type 2 errors.

Karen Song

Numerade Educator

02:42

Problem 2

Explain why scientists can never be certain whether their data really support their research hypothesis.

John Wells

Numerade Educator

Problem 3

Describe in your own words the techniques that scientists use to help them avoid drawing statistically invalid conclusions.

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02:11

Problem 5

What is a statistically significant result? What is the relationship among statistical significance, $N$, and effect size?

Kevin Morgan

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01:16

Problem 5

What are the implications of using a smaller, rather than a larger, alpha in a research design?

James Kiss

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01:35

Problem 6

What is the likelihood of a Type 1 error if the null hypothesis is actually true? What is the likelihood of a Type 1 error if the null hypothesis is actually false?