Scores on a standardized vocabulary test for fourth-grade students form a normal distribution with u = 78 and o = 11. What is the probability of obtaining a sample mean greater than M=75 in a sample of 63 students? O Cannot be determined Q 0.9850 0 0.0150 Q 0.9192 Which of the following is a true statement about power? 0 Large differences between groups (or sample and population) will have more power 0 Non-directional hypotheses have more power compared to directional hypotheses 0 Getting a bigger sample decreases power, because it decreases the sampling error 0 Smaller alpha level increases power A researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population with a mean of p. = 35 and a standard deviation of 0' = 2.1. For the following sample, report Cohen's d and whether the magnitude of the effect is small, medium, or large based on the benchmarks we have learned in class X = [50, 10, 30, 60] Q d = 1.19, small 0 d = 0.19, small 0 d = 0.19, large 0 d = 1.19, large