The mean : 2.5 million
S D = 0.6 million
2.5 - 2 · 0.6 = 2.5 - 1.2 = 1.3 million
2.5 + 2 · 0.6 = 2.5 + 1.2 = 3.7 million
Chebyshev theorem : at least 3/4 of the data lie within 2 standard deviations of the mean.
Answer:
At least 75 % of all firms.
Answer:
y= -4x-12
-4x
y= -12
Step-by-step explanation:
So Y is equal to -4x minus 12. You subtract the -4x by itself that will leave you with zero. And then you bring down Y and -12, and it will say that Y is equal to -12.
<h3 />
Answer: y = 2.5(x-1)
Step-by-step explanation:
Step 1
Find the point of tangency.
It's given as (x,y)= (1,0)
Step 2
Find the first derivative, and evaluate it at x=1
f'(x) = 5/2 × d(lnx)/dx = 5/2 × 1/x = 5/2x
f'(x) = 5/2 = 2.5
The slope of the tangent line at this point is m= 2.5
Step 3
Find the equation of the tangent line at (1,0) with a slope of m=2.5
y−y1 = m(x - x1)
y-0 = 2.5(x-1)
y = 2.5(x-1)
Answer:
9
Step-by-step explanation:
let a = 2
b = 5
2a + b
Substituting the values,
=> 2(2) + 5
=> 4 + 5
=> 9
