soniyab1004 soniyab1004
  • 28-01-2024
  • Mathematics
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In an examination given to students at a large number of
different schools the mean grade was 74.5 and S.D grade was
8. At one particular school where 200 students took the
examination the mean grade was 75.9. Discuss the significance
of this result at both 5% and 1% level of significance.

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