Answer:
the covariance between the revenue and cost is 1,513. What is the variance of the profit (X-Y) of the company is 303468
Step-by-step explanation:
Given that;
E(x) = 6263
SD(x) = 440
F(y) = 4872
SD(y) = 336
COVI (x, y) = 1513
Variance x = [ SD(x) ]²
Variance x = [440]² = 193600
Variance y = [ SD(y) ]²
Variance y = [336]² = 112896
Now to get variance of the profit (X-Y) of the company we say;
variance ( x-y ) = variance x + variance y - 2covi(x.y)
we substitute
variance ( x-y ) = 193600 + 112896 - ( 2 × 1513 )
variance ( x-y ) = 306496 - 3026
variance ( x-y ) = 303468
therefore the covariance between the revenue and cost is 1,513. What is the variance of the profit (X-Y) of the company is 303468
Answer:
11
Step-by-step explanation:
1 x − 7 = 4
x=4+7=11
<span>Quick Check: Review of Parallel and Perpendicular Lines
1. B. angle 4
2. B. </span>alternate interior angles<span>
3. D. 150
4. </span>D. a = 36, b = 118, c = 62
Answer: $ 7.00
Step-by-step explanation:
you multiply 1.15 by 4
and multiply 1.20 by 2
add
Step-by-step explanation:
first find a number that makes divided both if you don't get multiply the denominators
