3.1 The following table shows the employees of a small manufacturing company cross-classified based on age and work category.
Work category
Age Production Sales
Office Total
Group
<25
50
50
102
25-40
24
50
>40
40
4
10
54
Total
160
30
110
N
3.1.1 Copy and complete the cross-tabulation table above.
[3]
3.1.2 An employee is selected at random from this population. Calculate the
probability that the employee is:
(a) Under 40 years of age.
[1]