Q20Multiple choiceExercise 14.3
A recent survey found that the ages of workers in a factory is distributed as follows: Age (in years) 20 - 29 30 - 39 40 - 49 50 - 59 60 and above Number of workers 38 27 86 46 3 If a person is selected at random, find the probability that the person is:
- (i)40 years or more
- (ii)under 40 years STATISTICS AND PROBABILITY 145
- (iii)having age from 30 to 39 years
- (iv)under 60 but over 39 years