Given below is the frequency distribution of wages (in Rs.) of 30 workers in a certain factory :
A worker is selected atr random. Find the probability that his wages are :
(i) less than Rs. 150
(ii) at least Rs. 210
(iii) more than or equal to 150 but less than Rs. 210.
Answers
Probability 7/30 for wages less than Rs. 150 , Probability 7/30 for wages at least Rs. 210 , Probability 8/15 for wages more than or equal to 150 but less than Rs. 210.
Step-by-step explanation:
See attached picture for missing data :
110 - 130 3 3
130 - 150 4 7
150 - 170 5 12
170 - 190 6 18
190 - 210 5 23
210 - 230 4 27
230 - 250 3 30
Total Workers = 30
wages are : less than Rs. 150 = 110 - 130 + 130 - 150
= 3 + 4 = 7
Probability = 7/30
wages are at least Rs. 210
210 - 230 + 230 - 250 = 4 + 3 = 7
Probability = 7/30
wages are more than or equal to 150 but less than Rs. 210.
150 - 170 + 170 - 190 + 190 - 210
= 5 + 6 + 5
= 16
Probability = 16/30 = 8/15
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Answer:
hope it helps
Step-by-step explanation:
Total Workers = 30
wages are : less than Rs. 150 = 110 - 130 + 130 - 150
= 3 + 4 = 7
Probability = 7/30
wages are at least Rs. 210
210 - 230 + 230 - 250 = 4 + 3 = 7
Probability = 7/30
wages are more than or equal to 150 but less than Rs. 210.
150 - 170 + 170 - 190 + 190 - 210
= 5 + 6 + 5
= 16
Probability = 16/30 = 8/15