# 5 what was the attrition number and rate for this

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Chapter 14 / Exercise 3
Introduction to Probability and Statistics
Beaver/Mendenhall
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5. What was the attrition number and rate for this study? Provide a rationale for your answer.
6. Calculate the attrition rate for a study that included a sample size of 250 subjects and 10 became too ill to continue in the study, 5 could not be contacted after hospital discharge, and 4 died. Round your answer to the nearest tenth of a percent.
7. What was the total sample for this study?
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Chapter 14 / Exercise 3
Introduction to Probability and Statistics
Beaver/Mendenhall
Expert Verified
8. The intervention and control groups had unequal numbers. Is this a study strength or weakness? Provide a rationale for your answer. 9. Discuss the results of the power analysis conducted for this study. Was the sample size adequate for this study? Provide a rationale for your answers. 10. Are the findings from this study ready for use in practice? Provide a rationale for your answer.