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1- Use this data for a statistical test to see whether the three modalities are not equally effective in that the mean score of the product knowledge...

1-     Use this data for a statistical test to see whether the three modalities are not equally effective in that the mean score of the product knowledge test are not the same for the three modalities. Use 0.05 as the level of significance.  


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262.25 282.80

110.934 60.415

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