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The following excerpt from How Statistical Expertise Is Used in Medical Research (Altman, D. G., S. N. Goodman, and S. Schroter, Journal of the

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The following excerpt from "How Statistical Expertise Is Used in Medical Research" (Altman, D. G., S. N. Goodman, and S. Schroter, Journal of the American Medical Association 287(21):2817-20, 2002) describes the data collection method for this study. Authors of original research articles who submitted to BMJ [British Medical Journal]and Annals of Internal Medicine from May through August 2001 were sent a short questionnaire....Authors were asked if they received assistance from a person with statistical expertise. In the first sample, of the 190 who did not work with a statistician, 145 had papers rejected without peer review. In the second sample, of the 514 who did work with a statistician, 300 had papers rejected without peer review. For Input Box #1, Write the lower bound of the 95% Confidence Interval. Use this formula and round your answer to 2 decimal places (P1 - P2) P1 (1-1) p2 (1-2) Z V + n1 n2 Write your answer rounded to the hundredths place. For Input Box #2, Write the upper bound of the 95% Confidence Interval. Use this formula - (P1 P2) V P1 (1-1) p2 (1-2) + n1 n2 Write your answer rounded to the hundredths place.

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