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QUESTION

Do runners have lower heart rates, on average? Assume that non runners have an average heart rate of 72 beats per minute. State the null and

Do runners have lower heart rates, on average? Assume that non runners have an average heart rate of 72 beats per minute.

  1. State the null and alternate hypotheses. What is the level of significance?
  2. Suppose we know that sigma= 7 beats per minute. We randomly sample 50 runners and find that mean=68.25 beats per minute. Find the test statistic.
  3. Would it be likely to see mean=68.25 (or less) if meu=72. Explain.
  4. If we decide to reject Ho could we be doing this in error?
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