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To determine her power usage, Charlotte divides up her day into three parts: morning, afternoon, and evening. She then measures her power usage at 2
To determine her power usage, Charlotte divides up her day into three parts: morning, afternoon, and evening. She then measures her power usage at 2 randomly selected times during each part of the day. What type of sampling is used? O A. Systematic O B. Stratified O C. Simple random O D. Cluster O E. Convenience
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