(Step-by-Step) A certain random variable X is distributed normal with μ = 2.0 and variance σ ^2 = 9. Samples of size n=9 are taken. Consider the
Question: A certain random variable X is distributed normal with \(\mu \) = 2.0 and variance \({{\sigma }^{2}}\) = 9. Samples of size n=9 are taken. Consider the random variable \({{\bar{X}}_{n=9}}\). Calculate Pr(2 < \({{\bar{X}}_{n=9}}\) <2.85)
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