(Answered) A teacher wants to know how well the students in her gifted

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A teacher wants to know how well the students in her gifted class perform relative to her other classes. She administers a standardized test to all of her classes, which has a mean of 50 (SD = 10). Her gifted class of 31 students has an average score of 55. She want to know what percent of all of her classes score lower than her gifted class.

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