SOLUTION: How do I set this up(not on the calculation): Hospital records show that of patients suffering from a certain disease, 75% die of it. What is the probability that of 6 randomly se

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Question 535841: How do I set this up(not on the calculation):
Hospital records show that of patients suffering from a certain disease, 75% die of it. What is the probability that of 6 randomly selected patients, 4 will recover?

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!

The probability of successes in trials where is the probability of success on any given trial is given by:



Where is the number of combinations of things taken at a time and is calculated by

If 75% die, 25% recover. So calculate:



I did part of your arithmetic for you. You can do the rest for yourself.

John

My calculator said it, I believe it, that settles it
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