Answer
Probability that the player is African-American and plays guard is
$P$ (Player is African-American and plays guard) = $\frac{128}{368} = 34.7826$%
Work Step by Step
Probability (an event) = No of Favorable Outcomes / Total No of Outcomes.
Favorable Outcome = Player is African-American and plays guard = 128.
Total No of outcomes = Total Players = 368.
