Aradio station received 30,628 calls requesting the same song what is the value of the digit 3 in 30,628

The three is in the ten thousands place; so it would equal thirty thousand. I'm not sure if that's how you wanted the answer though.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0