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In: Statistics and Probability

A random sample of 400 Hispanics has finished an average of 10.9 years of formal education...

A random sample of 400 Hispanics has finished an average of 10.9 years of formal education with a standard deviation of 1.7.

a) Is the education level in this sample significantly lower than the national average of 12.2 years? Use α=.01 level

            b) Calculate the ES (effect size) and indicate if it is strong, moderate, or weak.

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