Question

7. Which of the following is true? a. Hypothesis testing does not tell us much about the magnitude of the treatment effect b. A p-value tells us about the magnitude of the treatment effect c. A large Sig. value in an SPSS output indicates a large effect d. Rejecting the null means that the experiment is very important 8. Please explain why the options you did not select are incorrect:_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Answer 1

Ans:

Correct option is:

Hypothesis testing does not tell us much about the magnitude of the treatment effect

Effect size makes a relative comparison.The size of the treatment effect relative to the difference expected by chance. If the standard error is very small, then the treatment effect can also be very small and still be bigger than chance. Therefore, a significant effect does not necessarily mean a big effect. however,if the sample size is large enough, any treatment effect, no matter how small, can be enough for us to reject the null hypothesis.