SOLUTION: A person randomly selects one of the six envelopes shown below. Each envelope contains a check that a person gets to keep. Determine the person's expectation if four envelopes cont

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Question 731989: A person randomly selects one of the six envelopes shown below. Each envelope contains a check that a person gets to keep. Determine the person's expectation if four envelopes contain a $1000 check and two envelopes contain a $5000 check.
Found 2 solutions by lynnlo, ikleyn:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by ikleyn(53419) About Me  (Show Source):
You can put this solution on YOUR website!
.
A person randomly selects one of the six envelopes shown below. Each envelope contains a check
that a person gets to keep. Determine the person's expectation if four envelopes contain a $1000 check
and two envelopes contain a $5000 check.
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   With probability 4%2F6 the person will get a $1000 check 

or with probability 2%2F6 the person will get a $5000 check .


So, the Math expectation is

    %284%2F6%29%2A1000 + %282%2F6%29%2A5000 = %282%2F3%29%2A1000 + %281%2F3%29%2A5000 = %282%2A1000%2B5000%29%2F3 = 7000%2F3 dollars.   ANSWER

Solved.

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What is written in the post by @lynnlo is nonsense.

Simply ignore it.