Question 1161521: Professor Meredith from the University of North Dakota has been working on a new cholesterol medication that is being called TriglicoKiller. The university is now conducting studies to determine if there is a possible side effect of nose bleeds.
Placebo (Population Rate)
To help determine the usual rate of nose bleeds, the research team gave a placebo (sugar pill) to 1713 subjects. Of those 1713 subjects, 4 of them developed nose bleeds.
TriglicoKiller Trial
The TriglicoKiller drug was given to 2741 subjects. Of those 2741 subjects, 18 of them developed nose bleeds.
Question: If you had a sample size of 2741 that did NOT use TriglicoKiller, how many would expect to develop nose bleeds?
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! the placebo had 4/1713 nosebleeds
want to know what expected value would be in a group of 2741.
Cross-multiply 4/1713=x/2741.
x=6.4 people
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