Use the confidence level and sample data to find the margin of error E. Round your answer to the same number of decimal places as the sample mean unless otherwise noted: Systolic blood pressures for women aged 18-24: 94% confidence; n = 127 mm Hg 115.7 mm Hg 2.3 mm Hg 49.6 mm Hg 2.0 mm Hg 25 mm Hg
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We are given a 94% confidence level, which means the critical value (z-score) can be found using a standard normal distribution table or calculator. For a 94% confidence level, the z-score is approximately 1.88. Show more…
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'A sample of 94 women aged 18-24 yields a mean systolic blood pressure of 114.1 mm Hg: Assuming that 6 = 13.4 mm Hg, find the margin of error in estimating / at the 95% level of confidence'
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