设随机变量<img src="/lqwvjeImg/40/408bfb7643639711a78b10a0ea53062f.png" style="width:19px;height:17px;">服从参数为2的指数分布,则下列结论正确的是( ).<br>·<img src="/lqwvjeImg/06/06bfeb95502a7212351a4f299e58a0c4.png" <br>·<img src="/lqwvjeImg/29/2963a966f0674ffae17c1c7c4ed622a1.png" ;<br>·<img src="/lqwvjeImg/27/27836b13e3d8555db479e06eb63fabed.png" ;<br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/155108622125966e18b7e2aa04b37b192ab8ccd7174b3image68.png"

设随机变量

服从参数为2的指数分布,则下列结论正确的是( ).
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·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/155108622125966e18b7e2aa04b37b192ab8ccd7174b3image68.png"

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