Problem 1
1. If a student is selected at random, what is the probability that they are a girl and play basketball?
20/150 = 0.13
6. If a student is selected at random, what is the probability that they are in 10th grade and prefer history?
40/150 = 0.27
11. If a student is selected at random, what is the probability that they are in high school and prefer rap
25/115 = 0.22
16. If a student is selected at random, what is the probability that they own an Android phone?
65/145 = 0.45
21. If a student is selected at random, what is the probability that they are in 9th grade and ride the bus?
22/100 = 0.22
2. If a student is selected at random, what is the probability that they do not play a sport?
35/150 = 0.23
7. If a student in 9th grade is selected at random, what is the probability that they prefer science?
30/75 = 0.40
12. If a student is selected at random, what is the probability that they prefer country music?
25/115 = 0.22
17. If a student is selected at random, what is the probability that they are in 12th grade and have no phone?
5/145 = 0.03
22. If a student is selected at random, what is the probability that they walk to school?
20/100 = 0.20
3. If a student who plays soccer is selected at random, what is the probability that they are a boy?
40/70 = 0.57
8. If a student is selected at random, what is the probability that they prefer history?
60/150 = 0.40
13. If a middle school student is selected at random, what is the probability that they prefer pop and rap?
18+12/45 = 30/45 = 0.67
18. If a student who owns an iPhone is selected at random, what is the probability that they are in 12th grade?
30/65 = 0.46
23. If a student who rides the bus is selected at random, what is the probability that they are in 10th grade?
28/50 = 0.56
4. If a student is selected at random, what is the probability that they are a boy and play basketball?
25/150 = 0.17
9. If a student is selected at random, what is the probability that they are in 10th grade and prefer math?
20/150 = 0.13
14. If a student is selected at random, what is the probability that they are in middle school and prefer country music?
10/115 = 0.09
19. If a student is selected at random, what is the probability that they are in 11th grade and own an iPhone?
35/145 = 0.24
24. If a student is selected at random, what is the probability that they are in 10th grade and come by car?
12/100 = 0.12
5. If a student who plays basketball is selected at random, what is the probability that they are a girl?
20/45 = 0.44
10. If a student who prefers science is selected at random, what is the probability that they are in 9th grade?
30/45 = 0.67
15. If a student who prefers pop is selected at random, what is the probability that they are in high school?
20/38 = 0.53
20. If a student with no phone is selected at random, what is the probability that they are in 11th grade?
10/15 = 0.67
25. If a student who walks is selected at random, what is the probability that they are in 9th grade?
10/20 = 0.50