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| A mutual fund manager wants to create a fund based on a high-grade corporate bond index. She first distinguishes between utility bonds and industrial bonds; she then, for each segment, defines maturity intervals of less than 5 years, 5 to 10 years, and greater than 10 years. For each segment and maturity level, she classifies the bonds as callable or non-callable. She then selects bonds from each of the subpopulations she has created. For the manager’s sample, which of the following best describes the sampling approach? A:Systematic B: Simple random C:Stratified random |
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