Question: A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 long-distance runners. He measured their resting pulses. Their pulses were 45, 45, 64, 50, 58, 49, 47, 55, 50, 52 beats per minute. The average resting pulse of athletes in the general population is normally distributed with a pulse rate of 60 beats per minute.

1. What statistical test should be used to analyze the data?
2. Is this a one- or two- tailed test?
3. What are H ₀ and H _a for this study?
4. Find t _cv from appendix A in Jackson’s text.
5. Compute t _obt
6. Should H ₀ be rejected? What should the researcher conclude?

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