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September 18, 2014

September 18, 2014

Posted by **Salman** on Thursday, December 2, 2010 at 1:16pm.

f1(x)=2x, 0 <x<1

Instrument 2 yields a measurement whose p.d.f. is

f2(x)=3x^2, 0 <x<1

Suppose that one of the two instruments is chosen at random and a measurement X is made with it.

(a)

Determine the marginal p.d.f. of X.

(b)

If X = 1/4 what is the probability that instrument 1 was used?

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