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Problem 1 Check all correct answers. Which of the following statistic is used to establish an interval estimate of 02, the variance of a normal

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Problem 1 Check all correct answers. Which of the following statistic is used to establish an interval estimate of 02, the variance of a normal population? ,,,,, (a) X2 which has a chisquared distribution ,,,,, (b) Z , which has a standard normal distribution _____ (c) T, which has a student tdistribution _____ (d) F, which has an Fdistribution

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