What is the standard error of measurement

Reference no: EM133247889

Question - Standard Math Achievement Test was administered to a group of 9th-grade students in Kentucky. The average test score was 76 out of 100, standard deviation was 6, and test reliability was estimated as .65 (rxx=.65).

Part 1 - What is the standard error of measurement (SEM) of the Standard Math Achievement Test?

Part 2 - Tommy scored 80 on the test. What is the 95% confidence interval for Tommy's score? Provide interpretation of the 95% confidence interval.

Reference no: EM133247889

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