The expected value of the dollars in dollars is 0.36
Given that,
Assume that a bag contains 30 quarters, 17 dimes, and 13 nickels, and that one coin is picked at random.
30 quarters, 17 dimes, 13 nickels
Expected value of the draw
=30/60 * 0.25 + 17/60 * 0.1 + 13/60* 0.05
= 0 . 16416
~ 0.16
Expected value of X
= - 4 x0.15 + (-2) x 0.23 + 0x 0.28+1 x 0.19 + 3 x 0 . 12 + 5 x 0. 03
= - 0.36
Hence, The expected value of the draw in dollars is 0.36
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