Consider the following three distinctions: • Class Difficulty (X), with degrees "Easy" and "Difficult;" • Student Effort (Y), with degrees "Lazy" and "Hard Working;" • Student Grade (Z), with degrees...

Consider the following three distinctions:

• Class Difficulty (X), with degrees "Easy" and "Difficult;"

• Student Effort (Y), with degrees "Lazy" and "Hard Working;"

• Student Grade (Z), with degrees "A" and "5 or less."

The following table provides a joint probability distribution over these distinctions: