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Now ultimately we want to know if hearing this song, on hypothesis testing in
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lesson nine, will result in higher engagement and learning. So what statistic
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should we calculate to determine this? Should we simply note whether or not the
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sample means are less than or greater than the population mean? Or should we
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calculate the actual difference between the population mean and the sample mean
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for each measure, or should we found out where each sample mean falls on the
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distribution of sample means from each population, or should we find how many
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population standard deviations each sample mean is from the population mean?