arginal-probability-as-a-decimal-that-a-randomly-chosen-student-plays-basketball

Question

A school survey records 120 students: 30 play football, 50 play basketball, 40 play neither. What is the marginal probability (as a decimal) that a randomly chosen student plays basketball?

Accepted Answer

0.4167 (approximately)

Answer

0.3333, assuming equal distribution between sports when some students play multiple sports.

Answer

0.2500, if you mistakenly divide the number of football players by the total players who play sports.

Answer

0.5833 approximately, because you subtract those who neither play from the grand total and divide.