The chi square distribution with 4 degrees of freedom is given by [f(x)= begin{cases}frac{1}{4} cdot x cdot

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The chi square distribution with 4 degrees of freedom is given by

\[f(x)= \begin{cases}\frac{1}{4} \cdot x \cdot e^{-x / 2} & x>0 \\ 0 & x \leq 0\end{cases}\]

Find the probability that the variance of a random sample of size 5 from a normal population with \(\sigma=15\) will exceed 180.

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Probability And Statistics For Engineers

ISBN: 9780134435688

9th Global Edition

Authors: Richard Johnson, Irwin Miller, John Freund

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