A research article reports the results of a drug test. This medicine used to reduce vision loss in people suffering from macular degeneration. The article state p = 0,04 section findings.

Question

The following issues are of three different interpretations of this value p. Note which of these three explanations are correct and which are not.

a) Is the probability that the results are as or more extreme than those of the study, if the drug is not effective. (True or False)

b) Is the probability that the drug is not effective. (T/F)

c) Is the probability that the drug is effective.T/F
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I believe that:
a) is False
b) is True
c) Is False.

What do you believe?

Answer 1

P = probability that rejecting the null hypothesis is due solely to chance factors.

What is your null hypothesis?

If Ho = no difference, then I would agree with you.

Answer 2

Hello PsyDAG.

I do not know. The question is given exactly as you see.

I believe that this is tricky. Maybe wants to think that of course the demand of the researchers is the medicine is effective. So the null hypothesis is exactly the opposite (no difference). Do you agree?

Thank you again

Answer 3

The following reference may confirm your assumptions.

http://cjasn.asnjournals.org/content/3/5/1246.full

Answer 4

Dear MathMate,
Thank you for the paper it will be very usefull for me!

As I understand from this paper i was correct?

a) is False
b) is True
c) Is False.

Thank you in advance.