expected value(Mean of a discrete random variable)question

2007-05-22 4:10 pm
The Geology department of an oil well drilling firm give the firm the following report about a potential oil well : There is a 20% probability of making a great strike and earning 10000000. There is a 30% probability of marking a good strike and earning 4000000. Otherwise they lose their investment of 5000000.

Do you think the company should go ahead with the drilling? Explain your answer.

回答 (1)

✔ 最佳答案
Consider the expectation,

Expectation: 10000000 * 0.2 + 4000000 * 0.3 - 5000000 * 0.5 = 700000 > 0

Therefore, the company expects it is a earning process.
Therefore, they should go ahead with the drilling.
參考: me


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