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Question: 7 a probability density function pdf is given by fx21x3...

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7. A probability density function (PDF) is given by: f(x)-21x3 for x>a What value of a will make this a PDF? 8. A probability density function (PDF) is given by: f(x) k(8x-x2) for 0<x<8 What value of k will make this a PDF? 9. A probability density function (PDF) is given by: f(x)-e.(x4) for x> a What value of a will make this a PDF? 10. A probability density function (PDF) is given by: f(x)-15x2 for-a<x<a What value of a will make this a PDF?
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