Answer:
(a)
(b)
Step-by-step explanation:
Given
Solving (a): The pmf
This means that we list out the probability of each value of x.
To do this, we simply subtract the current probability value from the next.
So, we have:
The calculation is as follows:
The x values are gotten by considering where the equality sign is in each range.
means
means
means
means
means
Solving (b):
This is calculated as:
From the given function
So:
This is calculated as:
<span>4*((‑(8*x))+5)-(‑(33*x))-26
sorry if this is to hard to understand
</span>
Answer:
-14
Step-by-step explanation:
Think of it like this-
subtracting a negative is like adding a positive, so all you have to do is add a negative sign to the sum after solving these sort of problems :>
Hope this helps!