Question: |Use the following information for the problems 15~17. A stock had annual returns of 5.3%, -2.7%, 16.2%, and 13.6% over the past four years. 15.

 |Use the following information for the problems 15~17. A stock had

|Use the following information for the problems 15~17. A stock had annual returns of 5.3%, -2.7%, 16.2%, and 13.6% over the past four years. 15. What is the mean of the above returns? 16. What is the standard deviation of the above returns? 17. What is the probability of gaining 25.24% or more

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