The records of 400 examinees are given below : Educational qualifications Scores В.А. B.Sc. B.Com. Total Below 50 90 30 60 180 Between 50 and 60 20 70 70 160 Above 60 10 30 20 60 Total 120 130 150 If an examinee is selected from this group of examinees, find () the probability that he is a commerce graduate, Gn the probability that he is a science graduate, given that his score is above 60, Ci) the probability that his score is below 50, given that he is a B.A. 400
The records of 400 examinees are given below : Educational qualifications Scores В.А. B.Sc. B.Com. Total Below 50 90 30 60 180 Between 50 and 60 20 70 70 160 Above 60 10 30 20 60 Total 120 130 150 If an examinee is selected from this group of examinees, find () the probability that he is a commerce graduate, Gn the probability that he is a science graduate, given that his score is above 60, Ci) the probability that his score is below 50, given that he is a B.A. 400
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
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Question
Transcribed Image Text:The records of 400 examinees are given below :
Educational qualifications
Scores
В.А.
B.Sc.
B.Com.
Total
Below 50
90
30
60
180
Between 50 and 60
20
70
70
160
Above 60
10
30
20
60
Total
If an examinee is selected from this group of examinees, find
() the probability that he is a commerce graduate,
i) the probability that he is a science graduate, given that his score is above 60,
Cii) the probability that his score is below 50, given that he is a B.A.
120
130
150
400
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