- 56. The records of 400 examinees are given below : Score Educational Qualification BA B.Sc. Total В. Com. Below 50 90 30 20 60 Between 50 and 60 70 180 10 70 Above 60 30 160 20 60 Total 120 130 150 400 If an examinee is selected from this group of examinees, find (1) The probability that he is a commerce graduate (i) The probability that he is a science graduate given that his score is above 60. (iii) The probability that his score is below 50, given that he is a B.A.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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56. The records of 400 examinees are given below:
Educational Qualification
Score
BA
B.Sc.
Total
B. Com.
90
Below 50
30
60
Between 50 and 60
20
70
180
70
10
30
160
Above 60
20
60
Total
120
130
150
400
If an examinee is selected from this group of examinees, find
(1) The probability that he is a commerce graduate
(in The probability that he is a science graduate given that his score is above 60.
(iii) The probability that his score is below 50, given that he is a B.A.
Transcribed Image Text:56. The records of 400 examinees are given below: Educational Qualification Score BA B.Sc. Total B. Com. 90 Below 50 30 60 Between 50 and 60 20 70 180 70 10 30 160 Above 60 20 60 Total 120 130 150 400 If an examinee is selected from this group of examinees, find (1) The probability that he is a commerce graduate (in The probability that he is a science graduate given that his score is above 60. (iii) The probability that his score is below 50, given that he is a B.A.
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