Stillwater Junior High divides students into teams taught by a group of teachers. The table shows the number of students
in each team.
team - number of students
acers - 78
Blazers - 80
Outbacks - 83
Quasars - 77
Voyagers - 82
Total - 400
The principal uses a computer to randomly select the name of a student from all the students in the school. With the
computer program, it is possible to draw the name of the same student twice. If the principal selects the name of a
student from the Acers on the first try, what is the probability she will draw the name of another student from the Acers
on the second try?
answer choices
1/78
38/399
19/100
39/200
The probability of drawing a student from the Acers on the first try is 78/400 = 0.195.
Since the computer program allows for the same student to be drawn twice, there are still 77 students left in the Acers team after the first draw. Therefore, the probability of drawing a student from the Acers team on the second try, given that a student from the Acers team was drawn on the first try, is 77/400 = 0.1925.
Therefore, the probability she will draw the name of another student from the Acers on the second try is 19/100.
So, the correct answer choice is 19/100.