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

question 16

Essay

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 sample mean?

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