Answer:
yea
Step-by-step explanation:
Answer:
35 adult tickets were sold
Step-by-step explanation:
If 35 adult tickets were sold, that would be $210
If 22 child tickets were sold, that would be $55
When you add them together, you get 57 tickets and $265.
(I'm sorry I don't know how to explain this but I hope it helped anyway)
Answer:
a) 
And replacing we got:

b) 
And then the expected value would be:

Step-by-step explanation:
We assume the following distribution given:
Y 0 1 2 3
P(Y) 0.60 0.25 0.10 0.05
Part a
We can find the expected value with this formula:

And replacing we got:

Part b
If we want to find the expected value of
we need to find the expected value of Y^2 and we have:

And replacing we got:

And then the expected value would be:

Answer:
75 less student tickets than adult tickets. The total is 625 tickets. So the student and adult tickets have to equal 625 when added.
Step-by-step explanation:
Student tickets: 275
Adult tickets: 350