Suppose that the efficacy of a certain drug is 0.63. Consider the sampling distribution (sample size...
Suppose that the efficacy of a certain drug is 0.63. Consider
the sampling distribution (sample size n = 143) for the proportion
of patients cured by this drug.
What is the mean of this distribution?
What is the standard error of this distribution?
Homework Answers
mean of the proportion = 0.63
standard error of proportion = sqrt(p*(1-p)/n)
= sqrt(0.63*(1-0.63)/143)
= 0.0404
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Suppose that the efficacy of a certain drug is 0.63. Consider
the sampling distribution (sample size...
Suppose that the efficacy of a certain drug is 0.63. Consider the sampling distribution (sample size...
Suppose that the efficacy of a certain drug is 0.63. Consider the sampling distribution (sample size n = 108) for the proportion of patients cured by this drug. What is the mean of this distribution?Answer:______ (Enter your answer as a number accurate to 2 decimal places.) What is the standard deviation of this sampling distribution (i.e., the standard error)? Answer:______(Enter your answer as a number accurate to 3 decimal places.)
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A drug trial involves 75 patients. At the time the efficacy of the drug is unknown, but many years later researchers will find that it cures 55% of patients. Let X denote the number who are cured (a) Find the mean and standard deviation of X (b) Use the Empirical Rule to fill in the blanks, and then add work: "There is a 2/3 chance that the drug trial will find between % and % are cured."
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