Final answer:
The expected top-down estimated cost for the project is $1,000,000.
Step-by-step explanation:
Based on historical data, the steam turbine accounts for 30% of the total costs for the industrial power plant. If the steam turbine costs $300,000, we can estimate the total cost of the project using a top-down approach.
To find the estimated total cost, we divide the cost of the steam turbine by its percentage of the total costs:
Total cost = $300,000 / 0.30
Total cost = $1,000,000
Therefore, the expected top-down estimated cost for this project would be $1,000,000.