Question

50 POINTS PLS HELP!!!!

Answer 1

The answer is a= 3
Best of luck

Answer 2

The plot of the PDF shows the distribution is symmetric. This means that the mean is the same as the median, and that the 50% of the distribution lies to other side of this mean, i.e.

$P(X\ge a)=P(X\le a)=0.50$

For this distribution, $a=3$.