Question

Part 2 - Free response. Show all work. Each question part is worth 6 points. 19. A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After six months on the diet, an SRS of 26 patients had an average systolic blood pressure of 141, with standard deviations - 22. Is this sufficient evidence that the diet is effective in meeting the target? Assume that the distribution of the systolic blood pressure for patients in this group is approximately Normal with mean u. A. State the null and the alternative hypotheses, in mathematical terms. B. What are the values of the appropriate test statistic and the corresponding p-value (to three decimal places)? C. Assume that alpha=0.05. First, state whether you can reject the null hypothesis, and explain why. Then, state your conclusion verbally in terms of the original question.

Answer 1

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