x = 5
Step-by-step explanation:
I wasn't sure if you needed just x or if you needed the other angles so I did both.
Can someone answer 2 pls
1 answer:
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Answer:
The expected value for the random variable is 14.16.
Step-by-step explanation:
We are given the following data below;
Z P(Z)
9 0.16 1.44
12 0.25 3
15 0.36 5.4
18 0.17 3.06
21 <u> 0.06 </u> <u> 1.26 </u>
Total <u> 1 </u> <u> 14.16 </u>
Now, the expected value for the random variable Z is given by;
E(Z) =
=
= 14.16.