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An instructor implemented an intervention targeted at improving students' verbal GRE scores compared to the GRE average. A sample of 55 students had a 95%

An instructor implemented an intervention targeted at improving students' verbal GRE scores compared to the GRE average. A sample of 55 students had a 95% confidence interval of 152.3 to 154.2. The midpoint of the confidence interval for the mean is the a. sample mean. b. population mean minus the sample mean. c. squared deviation score. d. population mean

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