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A study conducted by the American Heart Association found that the average American exercises vigorously for...

A study conducted by the American Heart Association found that the average American exercises vigorously for an average of 17 minutes per day, with a standard deviation of 1.2. A researcher who works with women with health issues wants to determine if the group is different than the national average. The researcher finds that his group of 25 women exercises 15 minutes per day. Assume normal distribution and test at a 0.05 level of significance (a = .05).

1. State the null and alternative hypotheses.

2. What type of test is this? One tail or two tail? State the testing criteria.

3. Compute the test statistic for this research.

4. State whether to reject or retain the null hypothesis and interpret the result.

5. What is the p-value associated with the test statistic?

6. What summary conclusion can you make about the female population compared to the average American?

math   Statistics-And-Probability   
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