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