murphy national bank is thinking of adding a new branch in a very different market area. it estimates that the new office will have an expected return of 16% with a standard deviation of 8%. Currently, it had an expected return of 12% with a standard deviation of 4%. the correlation between the returns on the new branch and the bank's current returns is estimated to be 0.20. the bank estimates that the new branch will represent 15% of the revenues of the bank. what is the expected return of the bank with the new branch?

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