Question: The average annual return on mid-cap stock funds over the five-year period from 2010 to 2015 follows a normal distribution, with a mean rate of

The average annual return on mid-cap stock funds over the five-year period from 2010 to 2015 follows a normal distribution, with a mean rate of return of 8.3% and a standard deviation of 2.2%. Determine the interval for returns that includes approximately 99.7% of the distribution

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