STATS 401 Study Guide - Midterm Guide: Independent And Identically Distributed Random Variables, Random Variable
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Practice problems for exam 1: suppose we observe an iid sample z1, . , z50 from a population with mean 5 and standard deviation 3. What is the probability that z > 5. 5: suppose we observe an iid sample z1, . , zn from a population with mean 0 and standard deviation 1. What sample size should be used so that the probability that. Z > 1 is less than 1/50: suppose we observe an iid sample z1, . , z20 from a normal population with mean 0 and standard deviation . What is the value of such that the probability of z < 1 is 1/3: suppose we observe x1, . Then suppose we observe two additional points x28 = 3 and x29 = 9. What is the sample mean of x1, . Express your answer in the simplest possible terms as a function of x: suppose we observe x1, .