Let (left{F_{n}ight}_{n=1}^{infty}) be a sequence of distribution functions such that (F_{n} leadsto F) as (n ightarrow infty)
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Let \(\left\{F_{n}ight\}_{n=1}^{\infty}\) be a sequence of distribution functions such that \(F_{n} \leadsto F\) as \(n ightarrow \infty\) for some distribution function \(F\). Let \(\left\{t_{n}ight\}_{n=1}^{\infty}\) be a sequence of real numbers.
a. Prove that if \(t_{n} ightarrow \infty\) as \(n ightarrow \infty\) then
\[\lim _{n ightarrow \infty} F_{n}\left(t_{n}ight)=1\]
b. Prove that if \(t_{n} ightarrow-\infty\) as \(n ightarrow \infty\) then
\[\lim _{n ightarrow \infty} F_{n}\left(t_{n}ight)=0\]
c. Prove that if \(t_{n} ightarrow t\) where \(t \in C(F)\) as \(n ightarrow \infty\) then
\[\lim _{n ightarrow \infty} F_{n}\left(t_{n}ight)=F(t)\]
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