a sample of n=25 individuals is selected from a population with u=80 and a treat

Question

a sample of n=25 individuals is selected from a population with u=80 and a treatment is administered to the sample. what is expected if the treatment has no effect?
a)the sample mean should be very different from 80 and shou lf lead you to reject the null hypothesis
b)the sample mean should be very different from 80 and should lead you yo fail yo reject the null hypothesis
c) the sample mean should be close to 80 and should lead you yo reject the null hypothesis
d)the sample mean should be close to 80 and should lead you to fail to reject the null hypothesis

Explanation / Answer

If the treatment has no effect then the sample mean would be close to 80 and we will not reject the null hypothesis.

Hence,

Option D is correct.

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