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प्रश्न
Define Standard normal variate
उत्तर
A random variable Z = `("X" – mu)/sigma` follows the standard normal distribution.
Z is called the standard normal variate with mean 0 and standard deviation 1 i.e Z – N (0, 1).
Its Probability density function is given by:
φ(z) = `1/sqrt(2pi) "e"^((-x^2)/2) -oo < "z" < oo`
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