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The Mean of the Population σX2=100\sigma_{X}^{2}=100 (μ)(\mu) Is 200 on a Test Measuring Math Skills of Middle

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The mean of the population σX2=100\sigma_{X}^{2}=100 (μ)(\mu) is 200 on a test measuring math skills of middle school students.The variance is
.The test scores for the students in Mr.Petri's class at Suburban Middle School are given below.Use a
rejection region with a probability of 5% only in the upper tail.What is the standard error of the mean? The mean of the population \sigma_{X}^{2}=100 (\mu) is 200 on a test measuring math skills of middle school students.The variance is .The test scores for the students in Mr.Petri's class at Suburban Middle School are given below.Use a rejection region with a probability of 5% only in the upper tail.What is the standard error of the mean?

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