[See Steps] A medical researcher wishes to determine the percentage of females who take vitamins, and to be 99% confident that the estimate is within 2 percentage
Question: A medical researcher wishes to determine the percentage of females who take vitamins, and to be 99% confident that the estimate is within 2 percentage points of the true proportion. A study of 180 females showed that 25% took vitamins.
- How large should the sample size be?
- If no estimate 0f the sample proportion is available, how large should the sample be?
Deliverable: Word Document 
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(Step-by-Step) Refer to Problem 5 on p.412. Use SAS or hand calculations
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