A researcher is studying test anxiety using a standardized

Reference no: EM13609982

A researcher is studying test anxiety using a standardized instrument that has a mean of 50 and a standard deviation of 10. The researcher collects a sample of 25 students from a statistics class to see if their test anxiety is greater than the national average at the .025 level of significance. The sample had a mean of 57.

Reference no: EM13609982

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