设随机变量<img src="https://zk.995w.com/lqwvjeImg/05/05cd6295643927aa3b7e610c2d41e287.png"style="width:34px;height:21px;">独立同分布,且<img src="https://zk.995w.com/lqwvjeImg/6f/6f187dc7103766cde28289eaf52a92cc.png"style="width:18px;height:17px;">的分布函数为<img src="https://zk.995w.com/lqwvjeImg/92/92beb59ee60331c1038c75fea1ccd130.png"style="width:35px;height:21px;">,则<img src="https://zk.995w.com/lqwvjeImg/bb/bb7352258d594b46bd5e3c32720be269.png"style="width:103px;height:26px;">的分布函数为( )<br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1655350159933daff528ed11148e8ab5e502132221d28image130.png"