Suppose X ~ N(0,1).
a.) Derive the expression of cdf F(x) for X^2
b.) Find the numerical value of F(2)
Let X be a random variable which follows N(0,1). Then the probability density function of X is given by
For N(0,1) the PDF is given by
Let us consider another random variable Y, then the P(Y<y)=F(y) gives the cdf of Y given by .
b) For y=2, the numberical value of F(2) is obtained by
However it is not easy to manually calculate above value one can use r software for the numberical finding of the above value.
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