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[See Solution] Worker Fatigue. The null and alternative hypotheses obtained in Exercise 9.10 on page 405 are H_0:μ =72bpm, H_a:μ >72bpm where μ is

Question: Worker Fatigue. The null and alternative hypotheses obtained in Exercise 9.10 on page 405 are

\[{{H}_{0}}:\mu =72\text{bpm,}\,\,{{H}_{\text{a}}}:\mu >72\text{bpm}\]

where \(\mu\) is the mean post-work heart rate of casting workers. Explain what each outcome would mean.

  1. Type I error
  2. Type II error
  3. Correct decision Now suppose that the results of the sampling lead to rejection of the null hypothesis. Classify that conclusion by error type or as a correct decision if in fact the mean post-work heart rate of casting workers
  4. is 72 bpm.
  5. exceeds 72 bpm.

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