Probability based on contingency table.
Form the summarized table, please answer the following questions:
|
|
Skill
|
|
Experience
|
Book Keeping
|
Reception
|
Word Processing
|
Total
|
|
Less than one year
|
15
|
5
|
30
|
50
|
|
One to three years
|
5
|
10
|
5
|
20
|
|
More than three years
|
5
|
15
|
10
|
30
|
|
Total
|
25
|
30
|
45
|
100
|
One person's file is selected at random. Find out the probability that the selected person would fall into the following categories.
a) Book keeping
b) Less than one year of experience
c) Reception
d) One to three years of experience
e) Word Processing
f) More than three years of experience