The expectation value is given by:
In this case we just have two options, each with probability 1/2, and the values of x are 2 and 9; then we have:
Therefore, the expectation is $6.5
Answer:
$84.60
Step-by-step explanation:
Multiply, since Bryon bought 3.6 cubic yards of soil and each cubic of yard cost $23.50. 3.6 x 23.50 = 84.6
Number two is proportional just do Y over X y/x meaning divided all the y’s over the x’s so 25 divided by 5 30 divided by 6 35/7 40/8 they all equal 5 so it’s proportional
number three isn’t proportional when you do y/x they all come out differently so you do y2-y1 over x2-x1 16-4/4-2 16-4=12 4-2=2 then you divided 12/2 that equals 6 you do that again but with the next numbers but they don’t equal so it’s no equation no constant
The answer is 0.875 and you can simmplify
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