Final Answer:
The expected value for the antique jewelry decorator, considering a loss of $10%, is $9,000.
Step-by-step explanation:
To find the expected value, we utilize the formula
. In this case, the original value is denoted by
, and the loss percentage is 10%, or 0.10. The equation becomes

Solving for
, we have
. To isolate
, we divide both sides by 0.90, yielding
. This is the original expected profit before any loss.
However, with the 10% loss considered, we calculate the actual expected value by subtracting the loss from the original expected profit:

In summary, the detailed calculation involves finding the original expected profit and then adjusting for the specified loss percentage, resulting in a final expected value of $9,000 for the antique jewelry decorator.