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4. The standard treatment for a certain disease has a probability of success of 0.45. A...

4. The standard treatment for a certain disease has a probability of success of 0.45. A researcher has produced a new drug and claims that the new drug represents an improvement on the standard treatment and is trying to sell his formula to a large drug company.
How many successful cases are needed to obtain a significant result at the 5% level is the drug company were to carry out a test 20 patients to justify the researcher’s claim?

Math   Statistics-And-Probability   
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