The data below shows the number of worker? employed in the various sections of a construction company in Lagos. Carpenters 24 Labourers 27 Plumbers 12 Plast...
Swali 1 Ripoti
The data below shows the number of worker?
employed in the various sections of a construction
company in Lagos.
Carpenters 24 Labourers 27
Plumbers 12 Plasterers 15
Painters 9 Messengers 3
Bricklayers 18
If a worker is retrenched, what is the probability that he is a plumber or plasterer.
Maelezo ya Majibu
To calculate the probability that a retrenched worker is a plumber or plasterer, we need to first find the total number of workers in the company, and then find the number of workers who are plumbers or plasterers.
The total number of workers in the company is:
24 (Carpenters) + 27 (Labourers) + 12 (Plumbers) + 15 (Plasterers) + 9 (Painters) + 3 (Messengers) + 18 (Bricklayers) = 108
The number of workers who are plumbers or plasterers is:
12 (Plumbers) + 15 (Plasterers) = 27
Therefore, the probability that a retrenched worker is a plumber or plasterer is:
27 (number of plumbers and plasterers) / 108 (total number of workers) = 1/4
So the correct answer is option D: 1/4.
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