Topic #1: Probability, Mean, Variance, Covariance, and ...

A very commonly used probability function is the normal probability density function. We write this function as. for - ∞ < x < ∞. We find that this function has the familiar bell-shape we have all seen before. If μ = 0 and . σ2 = 1 we have the following graph of a standard normal density. The area underneath this curve is equal to 1. ................
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