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11.3
Example 3: A person randomly selects one of the four envelopes
shown below. Each envelope contains a check that the person gets
to keep. However, before the person can select the envelope, he or
she must pay $7 to play. Determine the person's expectation for the
following:

Answer :

Answer:

Mathematical expectation is to get  %280%2B3%2B7%2B22%29%2F4 = 32%2F4 = 8 dollars from the envelopes.

Statistically, it is loosing game.Step-by-step explanation: