Let X be a random variable with the following probability distribution. Question table Value x of X P=Xx -20 0.10 -10 0.75 0 0.10 10 0.05 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation EX of X .   E(X)=   (b) Find the variance Var X o Var (X)=?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.