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Variance Computation Formula
Suppose X is a discrete random variable that takes on a finite number of values. Prove the variance computation formula. That is, show that
E[(X-μ)2] = E(X2) - μ2
A government official estimates that the mean time required to fill out the long form of the United States Census follows a distribution which is approximately normal with mean 36 minutes. A random sample of 16 people who were given the long form ..
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
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the total blood cholesterol concentrations in mgdl are shown below for a random sample of six people. in the table
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can a test of significance chi-square show a statistically significant relationship while a measure of association
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