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Three instructors in a coordinated course, T1, T2, and T3 evaluates axam papers. T1 evaluates 20%...

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Statistics

Three instructors in a coordinated course, T1, T2, and T3evaluates axam papers. T1 evaluates 20% of the exam papers, T2pevaluates 30% and T3 evaluates 50%. The three theachers make thefollowing proportions of errors (E) while evaluating the exampapers: 0.008, 0.008, and 0.003 respectively. If a randomlyselected exam paper has an error (E), what is the probability it isfrom instructor T1?

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