Consider a series system comprising four components, having independent and identically distributed lifetimes with hazard rate lambda(t)=1/1+t, t0, and survival function S(t), t0. If Y denotes the lifetime of the series system, then which of the following statements are true?

Q119Section C (Part C)119 of 120

Survival analysis — a series system of four components

Consider a series system comprising four components, having independent and identically distributed lifetimes with hazard rate $\lambda(t)=\frac{1}{1+t}$ , $t>0$ , and survival function $S(t)$ , $t>0$ . If $Y$ denotes the lifetime of the series system, then which of the following statements are true?

Multiple select: one or more options are correct. Select all of them, then submit — marks need the exact set.

Select every correct option, then submit.

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