There are 20 children in the cast of a class play, and 8 of the children are boys. of the boys, 4 have a speaking part in the pl
ay, and of the girls, 8 do not have a speaking part in the play. if a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?a. 2/5b. 1/2c. 3/5d. 3/4
<span>it all looks confusing when we try to juggle with all those numbers in the head. The problem can be solved systematically by constructing a contingency table. </span>role/gender B G total speaking...... 4 4 8 <span> silent............ 4 8 12 total............. 8 12 20 </span>Probability of a child having a speaking part is therefore (4+4)/20=8/20=2/5 a. 2/5
