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Assume a Normal Curve and That the Mean of the Raw

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Assume a normal curve and that the mean of the raw scores is 8, the standard deviation is 2.65, and the test-retest reliability is .84. If an individual who is in grade 5.6 received a score of 10, answer the following questions:
 Assume a normal curve and that the mean of the raw scores is 8, the standard deviation is 2.65, and the test-retest reliability is .84. If an individual who is in grade 5.6 received a score of 10, answer the following questions:    -Scores with this instrument correlate .50 with 6<sup>th </sup>grade GPA. If the 6<sup>th </sup>grade GPA has a mean of 3.0 and a SD of .3, predict the GPA range this students grades will fall 68 percent of the time.
-Scores with this instrument correlate .50 with 6th grade GPA. If the 6th grade GPA has a mean of 3.0 and a SD of .3, predict the GPA range this students grades will fall 68 percent of the time.


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