A statistician has to decide on the basis of a singleobservation whether the parameter θ of the density f(x) =⎧⎨⎩2xθ 2 for 0 < x < θ0 elsewhere equals θ1 or θ2, where θ1 < θ2. If he decides on θ1 when theobserved value is less than the constant k, on θ2 when theobserved value is greater than or equal to the constant k,and he is fined C dollars for making the wrong decision,which value of k will minimize the maximum risk?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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A statistician has to decide on the basis of a single
observation whether the parameter θ of the density

f(x) =



2x
θ 2 for 0 < x < θ
0 elsewhere

equals θ1 or θ2, where θ1 < θ2. If he decides on θ1 when the
observed value is less than the constant k, on θ2 when the
observed value is greater than or equal to the constant k,
and he is fined C dollars for making the wrong decision,
which value of k will minimize the maximum risk?

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