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A survey found that ages of 250 workers in a factory is distributed as follows:

Ages (in years)

20 - 29

30 - 39

40 - 49

50 - 59

60 and above

Number of workers

50

35

95

55

15

If a person is selected at random, find probability that the person is:

(i) 40 years or more

(ii) having age from 30 to 39 years

(iii) under 60 years but over 39 years.

Asked by Topperlearning User 11th December 2013, 3:48 AM
Answered by Expert
Answer:

(i) Number of workers above 40 years or more = 95 + 55 + 15 = 165

P(40 years or more) =  

(ii) P(30-39 yrs) =

(iii) Number of workers above 39 years and less than 60 years = 95 + 55 = 150

P(Above 39 years and Less than 60 years)=

Answered by Expert 11th December 2013, 5:48 AM
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