1. The average test score of entire school is 78 with standard deviation 10. A teacher took a random sample of 10 students and scored 75? What is the parameter mean? A. 8 B. 10 C. 75 D.78 2.The average test score for entire school is 78. The standard deviation of a random sample of 12 students is 10 with an average test score of 80. What is the sample mean? A. 10 B. 12 C. 78 D. 80

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