Question

An article presents a study of health outcomes in women with symptoms of heart disease. In a sample of 110 women whose test results suggested the presence of coronary artery disease, the mean peak systolic blood pressure was 169.9 mmHg, with a standard deviation of 24.8 mmHg. In a sample of 225 women whose test results suggested an absence of coronary artery disease, the mean peak systolic blood pressure was 163.3 mmHg, with a standard deviation of 25.8 mmHg. Find a 95% confidence interval for the difference in mean systolic blood pressure between these two groups of women. (Round the final answers to three decimal places.) The 95% confidence interval is = ?

          An article presents a study of health outcomes in women with
symptoms of heart disease. In a sample of 110 women whose test
results suggested the presence of coronary artery disease, the mean
peak systolic blood pressure was 169.9 mmHg, with a standard
deviation of 24.8 mmHg. In a sample of 225 women whose test results
suggested an absence of coronary artery disease, the mean peak
systolic blood pressure was 163.3 mmHg, with a standard deviation
of 25.8 mmHg. Find a 95% confidence interval for the difference in
mean systolic blood pressure between these two groups of women.
(Round the final answers to three decimal places.) The 95%
confidence interval is = ?

Added by Cindy N.

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