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:
hope it helps
Step-by-step explanation:
please mark me as brainliest thank you
The explicit formula is B
Answer:
Step-by-step explanation:
So for the given information, it would be easiest to use slope-intercept form, which is y=mx + b, where m is the slope and b is the y-intercept.
We can plug in 2/3 for the slope, because we are given that.
y=2/3x + b.
To find the y-intercept, plug in the given point for x and y and solve for b.
-5 = 2/3 · (-3) + b
-5 = -2 + b
b = -3
So now we have the complete equation of the line.
<u>y = 2/3x -3</u>
Now to graphing.
We can put the y-intercept, (0, -3), and the given point, (-3, -5) on a graph.
Answer:
Draw 4 circles and you'll find the answer