IB skill practice

Calculate conditional expectation

Use conditional probabilities to calculate an expected value within a group.

Paper 1, Paper 2 5 marks Difficulty 4

Calculate conditional expectation - exam scenario

Within a training provider group, \(X=8\) with probability 0.46 and \(X=13\) otherwise. Calculate the conditional expected value. Enter the requested value and choose the interpretation that matches the result.

Worked practice: result and interpretation

Calculate the requested result first, then choose the interpretation that follows from it.