A part of a promotion, students who participate in a survey are mailed a free pass for one of three activities: movies, roller skating, or bowling. Participants have an equal chance of receiving each type of pass. If 900 students participate, how many would be expected to receive a pass for roller skating?
A. 2 thirds
B.600
C. 450
D. 300
B. 600
Since participants have an equal chance of receiving each type of pass, the number of students expected to receive a pass for roller skating would be 1/3 of the total number of participants. Therefore, 1/3 of 900 is 300, so 300 students would be expected to receive a pass for roller skating.
are you sure?
I apologize for the mistake in my previous response. Let's correct the calculation.
If participants have an equal chance of receiving each type of pass, then 1/3 of the participants would receive a pass for roller skating.
1/3 of 900 is: (1/3) * 900 = 300
Therefore, the correct answer is:
D. 300