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 who have been on a diet and had an average blood pressure of = 143, with standard deviation s = 21. Is this sufficient evidence that the diet is effective in meeting the target? Assume the distribution of the systolic blood pressure for patients in this group is approximately Normal with mean μ.

The P-value for the one-sample t test is

Question

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 who have been on a diet and had an average blood pressure of = 143, with standard deviation s = 21. Is this sufficient evidence that the diet is effective in meeting the target? Assume the distribution of the systolic blood pressure for patients in this group is approximately Normal with mean μ.

The P-value for the one-sample t test is