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EXERCISE 12. A labor study involves a sample of 12 mining companies, 18 construction companies, 10...

EXERCISE 12. A labor study involves a sample of 12 mining companies, 18 construction companies, 10 manufacturing companies and 2 wholesale companies. If a company is randomly selected from this sample group, find the probability of getting a mining or construction company. Answer. 61/366.

Please provide a solution, I have given you the answer in advance. Thank you!

Math   Statistics-And-Probability   
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Note-your answer is not right...I have given the solution step by step...if there is any understanding problem regarding this please feel free to ask via comment box..thank you

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