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.
It has two solutions.
The first solution is x = -7
The second solution is x = 1
Hope this helps!
Answer:
diameter = 11
Step-by-step explanation:
πd /2
22/7 ×7
22 /2
Answer:
Good for you?
Step-by-step explanation:
5- How do you go to school everyday? Or who picks you up from home to school,
6- Students.