A study of the purchase decisions of three stock portfolio managers, A, B, C, was conducted to compare the numbers of stock purchases that resulted in profits over a time period less than or equal to one year. One hundred randomly selected purchases were examined for each of the managers. Do the data provide evidence of differences among the rates of successful purchases for the three managers? 
Definitions:
Risky Strategy
In decision making, opting for an option with potentially higher rewards but also higher risks, often contrasted with a safe or conservative approach.
Gains
Benefits, improvements, or increases usually achieved through effort, such as in skills, knowledge, or material success.
Maximizing
A decision-making strategy which seeks the best possible outcome or solution.
Concentrated Practice
A focused method of improving skills by repeatedly performing tasks or activities with intentional efforts to correct errors and refine performance.
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