Score on the standardized test

Reference no: EM1394933

A researcher believes that if she uses a different text the students will score differently on the standardized test but she doesn't know what the difference is. The test had a mean of 110 and a σ of 12. She tests a sample of 36 students and finds they score 112 on the test. Is this difference significant at the 5% level?

Reference no: EM1394933

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