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A teacher wanted to know how well the gifted students in here class perform relative to her other classes. She administers a standardized test with

A teacher wanted to know how well the gifted students in here class perform relative to her other classes. She administers a standardized test with a mean of 50 and standard deviation of 10. Her class of 31 students has an average score of 55. Test that their average score higher than 50?

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