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Does listening to music affect how many words you can memorize? Student researchers tried to answer this question by having 20 subjects listen to music while trying to memorize words and also had the same 20 subjects try to memorize words when not listening to music. They randomly determined which condition was done first for each of their subjects. Here are their hypotheses:Null: The average of the difference in number of words memorized (no music − with music) is 0 (μd = 0).Alternative: The average of the difference in number of words memorized (no music − with music) is greater than 0 (μd > 0).The students found the following results in terms of number of words memorized:No music With music DifferenceMean 13.9 10.2 3.7Standard deviation 3.15 3.07 3.08
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