In a random sample of 50 patients undergoing a standard surgical procedure, 15 required medication for post operative pain. In a random sample of 90 patients undergoing a new procedure, only 16 required pain medication. a)Are conditions met to perform inference onthis study?   b)Construct and interpret a 95% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures.   c) A physician claims that the proportion of patients who need pain medication is the same for both procedures. Does the confidence interval contradict this claim? Why/Why not?

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A:

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Q: Are the conditions for inference met

A:

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A:

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A:

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A:

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A:

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 424 green peas…

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.