Mariana, Pamela y Nancy decidieron comprar una consola de video juegos X Box y acordaron que cada una aportará 1/3 parte del cos
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Explanation:
Since we have given that
The prices of three t-shirts styles i.e $24, $30, $36 with their probability is given by
As we know that,
Now,
and
So,
So, the expected value of a t-shirt = $31.