FEQ21. Researchers are planning a study to compare the average grade of students in 2244 to the average grade of students in a second-year statistics course offered in the Faculty of Social Science. They conduct the following a priori power analysis. Based on this analysis they plan base their analysis on the grades of a SRS of 50 studentss from each course. R code: > pwr.t.test(d = 0.5, n = 50, sig.level = 0.10) Two-sample t test power calculation n = 50 d = 0.5 sig.level = 0.1 power = 0.7989545 alternative = two.sided NOTE: n is number in *each* group Suppose that the actual effect size is d = 0.25. What can we say about the power of their experiment power = 0.80 power = 0.40 power 0.80, but the exact value cannot be known based on the output shown