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Q55 Single choice

For the data set shown here which of these statements is/are true?

A
Hypothesis Testing of Means or Medians cannot be done since there are an unequal number of observations for the 3 samples
B
A Paired T-test would be applicable for comparing Grade B and Grade A since they follow each other in the data set
C
Grade A has the lowest sample Mean of the 3 samples
D
Grade A has a higher sample Mean than Grade B

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