# Question: Population requirement for primary hip replacement surgery a cross sectional study was

“Population requirement for primary hip-replacement surgery: a cross-sectional study” was conducted by the University of Bristol in the United Kingdom. The findings resulted in the following statement:“The prevalence of selfreported hip pain was 107 per 1000 (95% CI 101–113) for men and 173 per 1000 (166–180) for women.”

a. Explain the meaning of the confidence interval, 95% CI 101–113.

b. Find the standard error for the men’s self-reported hip pain 95% confidence interval.

c. Assuming the women’s data was also from a 95% confidence interval, find the standard error.

a. Explain the meaning of the confidence interval, 95% CI 101–113.

b. Find the standard error for the men’s self-reported hip pain 95% confidence interval.

c. Assuming the women’s data was also from a 95% confidence interval, find the standard error.

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