joint = cell / grand total; conditional = cell / conditioned total

1. گام 1Add row, column, and grand totals.
2. گام 2Name the requested probability.
3. گام 3Highlight the correct denominator.

Every table percentage needs an explicit denominator.

Run and edit the code, inspect intermediate output, and use the movable R Code Guide while practising.

Name the event, denominator, probability interpretation, and one operational limitation.

Use a hint before submitting if needed. Full calculations and interpretations appear after submission.