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Type I and Type II Errors of Null Hypotheses

Given the following information, would your decision be to reject or fail to reject the null hypothesis? Setting the level of significance at .05 for decision making, please provide an explanation for your conclusion to help me understand the concepts.

a) The null hypothesis that there is no relationship between the type of music a person listens to and his crime rate (P < .05).
b) The null hypothesis that there is no relationship between the amount of coffee consumption and GPA (p = .62)
c) The null hypothesis that there is a negative relationship between the number of hours worked and level of job satisfaction (p = .51).

Solution Preview

Setting the level of significance at .05 basically translates into if p-value is greater than 0.05, we keep the null hypothesis, otherwise we reject it.

a) Since ...

Solution Summary

In a brief, but concise response, the subject of Type I and Type II errors of null hypotheses is discussed. Important concepts such as p-values and the ability to reject a null hypothesis are detailed. This response is about 115 words in length.

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