(Solved) A medical researcher wishes to determine the percentage of females who take vitamins. He wishes to be 99% confident that the estimate is within
Question: A medical researcher wishes to determine the percentage of females who take vitamins. He wishes to be 99% confident that the estimate is within 2 percentage points of the true proportion. A recent study of 180 females showed that 25% took vitamins.
- How large should the sample size be?
- If no estimate of the sample proportion is available, how large should the sample be?
Deliverable: Word Document 
(Step-by-Step) A researcher wishes to estimate the proportion of adult
![[Step-by-Step] How large a sample should be](/images/solutions/MC-solution-library-58044.jpg "[Step-by-Step] How large a sample should be surveyed to estimate")
[Step-by-Step] How large a sample should be surveyed to estimate
(Step-by-Step) What distribution must be used when computing confidence
(Solution Library) Using Table G, find the values for χ _Left^2
(Step-by-Step) Find the 95% confidence interval for the variance
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