Let X1, X2,X3 be a random sample from a continuous distribution having cumulative distribution function F(t), probability density function f(t), and failure rate function \(\rm r(t)=\frac{f(t)}{1-F(t)}, t>0\), where F(0) = 0. If r(t) = 1 for all t >.0, then which of the following statements are true?
1
\(\rm P(max\{X_1, x_2\}<1)=\frac{1}{2e}\)
2
\(\rm P(min\{X_1, X_2\}>1)=\frac{1}{2e}\)
3
\(\rm P(min\{X_1, X_2\}
4
\(\rm P(max\{X_1, X_2\}