Answer:
Option A is the answer.
Step-by-step explanation:
The prices of three jacket styles are $42, $60 and $84.
The probability of choosing $42 value jacket is 1/6.
This means that expected value will be, [tex]42*(1/6) =7[/tex]
And the value of $60 will be [tex]60*(1/4) =15[/tex]
Similarly, the expected value of $84 will be [tex]84*(7/12) =49[/tex]
And combined expected value will be the sum of these three.
[tex]7+15+49= 71[/tex] dollars (expected value of jacket)
So, the answer is option A.