Data were collected on 100 students regarding their class and major. The data are summarized in the following contingency table:
Major/class |
Sophomore |
Junior |
Senior |
Total |
Undeclared |
19 |
5 |
6 |
30 |
Business |
5 |
17 |
16 |
38 |
Science |
5 |
6 |
21 |
32 |
Total |
29 |
28 |
43 |
100 |
.
What is the probability of randomly selecting an undeclared student given that the student is a senior?
0.30 |
||
0.14 |
||
0.73 |
||
0.43 |
Total senior students =43
P(undeclared | senior) = P(undeclared and senior)/P(senior)
= 6/43 =0.1395
So the answer is 0.14 (Option B) (rounded to 2 decimal places)
Please comment if any doubt. Thank you
Data were collected on 100 students regarding their class and major. The data are summarized in...
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