A second investigator thinks that she can show that a quite different manipulation can raise the mean influence score from 520 to 550. a. What is the effect size in question? b. What is the value of d...

A second investigator thinks that she can show that a quite different manipulation can raise the mean influence score from 520 to 550.

a. What is the effect size in question?

b. What is the value of d if the size of her sample is 100?

c. What is the power of the test?