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Capital punishment law: Null and research hypotheses

Capital punishment law is among the most complex bodies of law in the US. As a result of frequent errors, the Trial Judges Assn. has developed a special training course to try to cut down on the errors.

To study whether the training is effective, you perform a hypothesis test. What are the null and research hypotheses? Describe type 1 and type 2 errors in this case.

Solution Preview

To examine if the training is effective, you may conduct either a two-tailed or a one-tailed hypothesis test. I will provide the null and research hypotheses and Type 1 and Type 2 errors for both two-tailed and one-tailed hypothesis testing situations.

Two-tailed hypothesis testing:

Null hypothesis: In the population, there is no difference between the number of errors before and after the training.
Research ...

Solution Summary

Solution includes the appropriate null and research hypotheses with the descriptions of Type 1 and Type 2 errors.