STAT 3502 Study Guide - Quiz Guide: Sampling Distribution, Standard Deviation, Maximum Likelihood Estimation

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Stat 3502: probability and statistics - assignment 4. Assignments are to be handed in prior to the beginning of tutorial on the due dates listed above. No credit will be given for answers without justi cation. [5 marks] the mean and variance of the wait time (in minutes) for customers at a bank are 5 and 1. 96, respectively. Justify your answer if you can"t nd the probability. [8 marks] there are two tra c lights on alice"s route to and from work. Let x1 be the number of lights at which alice must stop on her way to work, and x2 be the number of lights at which alice must stop when returning from work. Suppose these two variables are independent, each with pmf given in the accompanying table. x. T : [2 marks] verify that t and 2. T can also be determined by the mean and variance of the population distribution, respectively.