On an examinations given to students at a large number of different school the mean grade was 74.5 and the stantdard diviation was 8.0 at one particulars school where 200 student took the examination. The mean grade was 75.9. Discuss the significant of the result at 0.05?
In Abia State College Of Education
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Asked by Shedrack on 20th September, 2022
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