answer both questions with explanation

Let X be the mean of the random sample drawn from a population whose p.d.f. is given by x) = (I+ax]l(15.6), -7.85 x 57.8 and \")0 = 0 otherwise. If k)? is an unbiased estimator of the pa rametera. then k = 0 0.3846 0 2.6000 0 1 0 0.0493 Let X and Y be two independent random variables taking values in {0, 1}. If Pt=0)=0.3. P(Y=l))=0.6, then PCX IV) is _ Provide the answer correct up to 3 decimal places