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At alpha 005 test the claim that there is no difference

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Question: A researcher wishes to try three different techniques to lower blood pressure. Subjects are randomly assigned to three groups, as indicated in the table below. After four weeks, the reduction in each person's blood pressure is recorded. At "alpha" = 0.05, test the claim that there is no difference among the means. In the event that the null hypothesis is rejected, do not perform a follow-up test (Tukey or Scheffe)

Medication   Exercise    Diet
8                     9            15
11                  10           10
10                  11           12
12                  13           11
14                  12             9

Reference no: EM13579473

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