Lifprasir
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Homework Statement
2. Homework Equations [/B]
So the sample mean is 2. the sample variance would be [[(3-1+1)-1]/12]/36 = 8/432.
The Attempt at a Solution
Is it, P[ (2.1-2)/sqrt(8/432) < z < (2.5-2)/sqrt(8/432)] = 0.232574.
The book answer is 0.2312. I just want to be sure.
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