$X \sim N (μ, σ^{2})$ with $Pr (X < 10) = 0.0228$ and $Pr (X < 16) = 0.5$ . Using $Pr (Z < - 2) = 0.0228$ , the values of $μ$ and $σ$ are:

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The random variable $X$ has a binomial distribution $X \sim Bi (n = 10, p = 0.2)$ . The standard deviation of $X$ is:
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