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प्रश्न
Define Normal distribution
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उत्तर
A random variable X is said to follow a normal distribution with parameters mean µ and variance σ2, if its probability density function is given by
`"f"(x : mu, sigma) = 1/(sigmasqrt(2pi)) "exp"{-1/2 ((x - mu)/omega)^2} {:(-oo < x < oo","),(-oo < mu < oo","),(sigma > 0):}`
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