Answer:
it is C
Step-by-step explanation:
I think the answer is 7 but im not positive
Answer:
The mean is 27.8
The required variance is 23.9358
Step-by-step explanation:
Consider the provided information.
Here the random sample size, n = 200
Unemployment rate is 13.9% = p = 0.139
Part (a) expected number of grads who are unemployed.
Hence, the mean is 27.8
Part (b) variance of the random variable "number of grads who are unemployed.

Hence, the required variance is 23.9358
Answer:
-5
Step-by-step explanation:
Here is how you solve this problem:
First, you set it up like this: 2x+1-3x+2
Second:You are finding f(4) and g(4) so you just plug in 4 for both problems:
2(4)+1-3(4)-2= 9-14= -5