Answer :
Capital per worker modified to reflect the difference in efficiency among workers provides a better measure of the capital per worker needed in an economy because it takes into account the fact that different workers are likely to have different levels of productivity.
This means that different levels of capital per worker may be required depending on the type of worker and their efficiency. By taking this into account, capital per worker can be better tailored to the needs of the economy and can be used to more accurately measure the capital per worker needed.
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