IB skill practice

Use cumulative distribution functions

Evaluate a CDF to calculate a probability up to a boundary.

Paper 1, Paper 2 5 marks Difficulty 4

Use cumulative distribution functions - exam decision

For a uniform manufacturing quality check model on \([0,5]\), evaluate the CDF at \(x=3\). Confirm the interpretation before entering the result. 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.