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Question

What's the easiest way to solve this problem

-1.28 = Sigma^-1 (25 - Mu)
1.28 = Sigma^-1 (475 - Mu)

were Sigma and Mu are each different varialbes that are constant...

Thanks
16 years ago

Answers

MathMate
Rewrite the equations as:
-1.28 =(25 - μ)/σ .... (1)
1.28 = (475 - μ)/σ .... (2)

Divide (2) by (1) to get
(475-μ)/(25-μ) = 1
Solve for μ and back substitute in (1) or (2).
μ=250, σ=175 approx.

16 years ago

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