A survey of 850 students conducted in two schools showed the following results:
School A:
*Students who took the bus = 400
* Students who did not take the bus = 150
Total = 550
School B:
*Students who took the bus = 200
* Students who did not take the bus = 100
Total = 300
School C:
*Students who took the bus = 600
* Students who did not take the bus = 250
Total = 850
Calculate the probability that a randomly chosen student from this group of 850 students takes the bus and is from school A.
How bout "from this group of 550+300+850=1700 students"??
Assumeing that you meant 1700 students, there are 400 from School A that took the bus. Ergo, P=400/1700 = 23.5%
To calculate the probability that a randomly chosen student from the group of 850 students takes the bus and is from school A, we need to divide the number of students who took the bus from school A by the total number of students in the group.
From the given information, we know that the number of students who took the bus from school A is 400. The total number of students in the group is 850.
The probability can be calculated as follows:
Probability = (Number of students who took the bus from school A) / (Total number of students in the group)
= 400 / 850
≈ 0.4706 or 47.06%
Therefore, the probability that a randomly chosen student from this group of 850 students takes the bus and is from school A is approximately 0.4706 or 47.06%.