Answer:
77/2 is 38.5 if that is what u were asking
Step-by-step explanation:
The answer is 10% if There is 40% six graders and 20% seventh graders then you need 10% more to make 100% so it’s 10% eighth graders
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
F(x) = -5x + 3
f(-4) = -5(-4) + 3
f(-4) = 20 + 3
f(-4) = 23
Answer:
this can be solved by simple unitary method