Question

The numbers of boys and girls in each of the four classes of a high school are shown in the bar graph.

If two students from the high school are chosen at random, one after the other, to represent the school at a leadership conference,
what is the probability that the second student chosen is a sophomore girl given that the first student chosen was a senior boy?

Answer 1

To know for sure I’d need to see the bar graph. But with in the information present the answer would be 12.25% or 1/8

Answer 2

Answer: D

Explanation:

After the first student is chosen, 1,449 students are left. Since there are 150 sophomore girls, the probability that the second student chosen is a sophomore girl is 150 /1449 = 50 /483 .