Corey and Jubile Lation, two brothers who

Corey and Jubile Lation, two brothers who are special education teachers, were interested in the mean number of I service training hours earned by general education and special education teachers in their school district. Their target population was limited to only their school district. They were able to obtain data from every general and special education teacher in their target population. The mean for general education teachers was 20 hours per school term. For special education teachers, the mean was 25 hours. Is it necessary for Lation brothers to conduct a statistical test to evaluate their findings to determine if the difference between the means is “real” versus due to chance?


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