please answer all

22. Coasidering an experiment that uses a one-sample t-statistic for analyzing the data; what does reporting the Cohen's d measure? a. The critical value of t b. The magnitude of the difference between the sample mean and the hypothesizad population mean c. The effect size of the treatment d. The Variance associated with the one-sample c. The proportion of data in the rejection or critical area 23. Considering an inferential statistical test, how could a researcher increase the "power" of the test statistic? a. Increase the Sample Size b. Increase the standard deviation of the sample c. Increase Beta d. All of the above Cappy is retired. Good-bye Cappy! 24. A group of student researchers want to obtain opinions about the Capital University mascot, Cappy, from a sample of Capital University students. The six student researchers develop a five question survey. On a given Thursday evening, sclected at random, four student researchers interview 20 students in their respective student dormitories using the five question survey and the two commuter students go to the Cap Center (the athletic fieldhouse) and select 20 students who are working out or shooting basketballs. The two student researchers use the five question survey to interview 20 students each. All the student researchers begin collecting feedback using the survey at 6p.m. and all finish by 10p.m. A total of 120CU students are interviewed from four different dormitories and the Cap Center, and 110 surveys are completed with no missing data (10 surveys were thrown out due to missing responses or students not taking the survey seriously). What is this method of sample selection called? a. Simple random sampling b. Cluster sampling c. Systematic random sampling d. k-th semi-random sampling c. Purposeful, haphazard or convenient sampling