Refer to Exercise 6.50. a. Compare the mean drops in blood pressure for the low-dose group and the control group. Use = .05 and

Refer to Exercise 6.50.

a. Compare the mean drops in blood pressure for the low-dose group and the control group. Use α = .05 and report the level of significance.
b. Estimate the size of the difference in the mean drops for the low-dose and control groups using a 95% confidence interval.
c. Do the conditions required for the statistical techniques used in parts (a) and (b) appear to be satisfied? Justify your answer.

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