Stats Solutions

(Solution Library) An absent-minded statistician has misplaced the values for the population means and population standard deviations of the random variables X_1,

Question: An absent-minded statistician has misplaced the values for the population means and population standard deviations of the random variables \(X_{1}, X_{2}\) and \(X_{3}\). However, he can remember that

\[\begin{aligned} & \Pr \left\{ {{X}_{1}}<20 \right\}=\Pr \left\{ {{X}_{1}}>60 \right\}=0.025 \\ & \Pr \left\{ {{X}_{2}}<60 \right\}=0.5,\Pr \left\{ 40<{{X}_{2}}<60 \right\}=0.4 \\ & \Pr \left\{ {{X}_{3}}<80 \right\}=\Pr \left\{ {{X}_{3}}>100 \right\},\Pr \left\{ 85<{{X}_{3}}<90 \right\}=0.2 \\ \end{aligned}\]

Use this information to find the values of the means and standard deviations.

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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