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28. The frequency distribution using the means computed from all possible random samples of a specific size taken from a population. a. Sample mean distribution b. Random sampling c. Population mean distribution d. Probability distribution 29. Which of the following statements best describes random sampling? a. It is a method of choosing a sample of observations from a population to make assumptions about the population. b. None of these c. It involves you to select the whole population to make assumptions about the population. d. It summarizes data for an entire population. 30. How many possible samples can be drawn from a population of scores {4,5,6,7,8} of samples of size 2? a. 20 b. 8 c. 18 d. 10 31. It is a subset taken from a population, either by random or by non- random sampling. a. Sample b. Statistics c. Population d. Parameter 32. It is a sampling technique in which each member of the population has an equal chance of being selected. a. Stratified random sampling b. Systematic sampling c. Cluster sampling d. Lottery sampling33. Which ofthe following formulas can be used to get the number of all possible samples in sampling distribution of sample means? a. am, where N is the total population and n is the sample to be taken out of the population. b. Nagy} where N is the total sample and n is the population to be taken out of the population. c. 9193, where N is the total population and n is the sample to be taken out of the population. d. None ofthese 34. What is the mean ofthe sampling distribution of sample means of samples of size 2 taken from a population of scores {4.5.6.18}? a.5 b.4 c.6 d.7 35. It describes the true value calculated from the whole population. a. Population b. Sample c. Statistic d. Parameter 36. In a certain examination, you need to belong above 85th percentile for you to pass. If the average score is 175 and the standard deviation is 5, determine your percentile rank if you scored 134 points in the exam. a. 96Eh b. 36th c. 94'h d. 84th 37. What is the z-score corresponding to 80th percentile in a standard normal distribution? a. 0.86 b. 0.87 c. 0.84 d. 0.85 38. Which ofthe following is the probability of P[z