all answers must have Solution or explanation ( ne to wo sentences only)

23. What percent of the students who took the exam have lower scores than Joe if Joe's score is at the 95th percentile rank? A. 5 B. 50 C. 47.5 D. 95 24. If Joe's score is at the 95" percentile rank, what is the probability that a score randomly chosen is equal to or greater the joe's score? A. 5 C. 25 B. 20 D. 95 25. What is the favorite ice cream flavor of the class? The statistical measure most appropriate to use in order to analyze students' response is A. mean C. mode B. median D. range 26. What is a reliable sample size for a study that has 400 target population size and 5% margin of error? A. 100 C. 200 B. 150 D. 250 27. The statement of purpose in a research study should A. describe the study C. identify the intent or objective of the study B. identify the methodology of the study D. specify the type of people to be involved in the study 28. A school has 400 girls and 350 boys. How many girls would you include in your study using statistical sampling if the total sample size is 90? A. 42 C. 50 B. 48 D. 79 29. The computer terminals in a school are labeled 1 to 300. The technician wants to know if the computers are in good condition by testing 50 of these units. He randomly selects the 12" to be the first unit to be tested. Which computer unit will be tested next? A. 150 C. 17 B. 16 D. 18 30. The feasibility of a research study should be considered in the light of A. cost C. researcher's expertise B. time D. all of the above