A special diet is intended to reduce systolic blood pressure. If the diet is effective, the target is to have the averag

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A Special Diet Is Intended To Reduce Systolic Blood Pressure If The Diet Is Effective The Target Is To Have The Averag 1 (193.39 KiB) Viewed 37 times

A special diet is intended to reduce systolic blood pressure. 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 28 patients with high blood pressure had an average cholesterol of (sample) mean = 143, with standard deviation s = 21. Is this sufficient evidence that the diet is effective in meeting the target? Assume the distribution of the cholesterol for patients in this group is approximately Normal with mean u. Suppose the mean and standard deviation obtained were based on a sample of 10 patients, rather than 28. The P-value would be Select one: O a. unchanged, because the variability measured by the standard deviation stays the same. b. smaller. O c. unchanged, because the difference between sample mean and the hypothesized value µ= 150 is unchanged. O d. larger.