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A pharmaceutical company recruited 15 subjects and conducted experiment to test one medication with three doses (5 subjects per dose) for controlling cholesterol. One month

A pharmaceutical company recruited 15 subjects and conducted experiment to test one medication with three doses (5 subjects per dose) for controlling cholesterol. One month later, these subjects were measured on the cholesterol (mg/dL). And the results are followed :

Dose 1 Dose 2 Dose 3
200 150 200
250 200 240
270 180 230
300 250 245
250 270 250

Research Question: whether there are mean differences of cholesterol among different doses.

  1. Write the test hypothesis
  2. Construct and fill out the ANOVA table by hand (show your work)
  3. State your conclusion

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