# Confidence Interval

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It has been determined that the correlation between a very good predictor variable and college GPA is .69. Also, the standard error of the estimate is .54 based on the four point grading scale. If a student should expect a 2.75 GPA, what are the 95% expectations for the student?

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##### Solution Summary

95% confidence interval for GPA is calculated given the expected value and the standard error of the estimate.

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standard error of estimate =Se = 0.54

Assuming sample size is large we will use normal ...

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