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S2 exam questions help

Just learnt s2 and am onto doing past papers. Had trouble with this cumulative distribution function question(part b c and d) as well as this other question on E(X) etc which I need help on part c)ii) if anyone helps, could you just reply with a picture with your working out and writing explaining your working out, think it would be simpler than having to type it all up on here :P any help at all appreciated
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JahJah
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Forgot to mention this is AQA s2


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TeeEm
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Original post by JahJah
Just learnt s2 and am onto doing past papers. Had trouble with this cumulative distribution function question(part b c and d) as well as this other question on E(X) etc which I need help on part c)ii) if anyone helps, could you just reply with a picture with your working out and writing explaining your working out, think it would be simpler than having to type it all up on here :P any help at all appreciated
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you are posting in the wrong section for help

please post here

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