Question: This problem continues using the data from the previous problem. The file P07_40.xlsx includes all of the previous data and contains fractions in row 3

This problem continues using the data from the previous problem. The file P07_40.xlsx includes all of the previous data and contains fractions in row 3 for creating a portfolio. These fractions are currently all equal to 1/28, but they can be changed to any values you like, as long as they continue to sum to

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