Students were surveyed on campus about their study habits. Some said they study in the morning, others study during the day between classes, and others study at night. Some students always study in a group and others always study alone. The distribution is shown below:

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Students were surveyed on campus about their study habits. Some said they study in the morning, others study during the day between classes, and others study at night. Some students always study in a group and others always study alone. The distribution is shown below:
How students study Morning Between
classes
Evening
Study in a group
8
4
2
Study alone
3
9
1
If a student who was surveyed is selected at random, find these probabilities, expressed as reduced fractions:
Part: 0 / 3
0 of 3 Parts Complete
 
Part 1 of 3
 
 
(a) The student studies in the evening.

The probability that the student studies in the evening is 
 
.
 
 
 
 
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