probability of something

Statistics
Tutor: None Selected Time limit: 1 Day

  Score                     A           B           C        D        F     Total

0-10

8

11

5

18

41

83

11-20

29

45

80

26

11

191

21-30

50

62

42

20

4

178

31-40

47

62

31

6

10

156

Column Totals

134

180

158

70

66

608

 

 

a)  What is the probability that a student will get a “B”?

b)    What is the probability that a student will get an “A” given that a score of 21-30 was achieved on the placement test?

c)   probability that a student scored between 11-20 and got a B in the course?

probability student got b/t 11-20 knowing they got B in clas

 

Jun 2nd, 2015

Please let me know if you need any clarification. I'm always happy to answer your questions.

wait............................working on your question......but you give me only 20 min....which is not enough

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 2nd, 2015

you can take all the time needed

Jun 2nd, 2015

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Jun 2nd, 2015
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