Statistics 241 (PSYS241)

When we have talked about sampling from the population. We expect our sample mean to equal the population mean. This allows us to make inferences back to the population. To quantify how closely our sample mean is reflective of the population. The goal of the hypothesis test is to determine whether our sample is different from what would be expected by chance. H0 : (sample) mean = population mean. One major problem with z scores as an inferential statistic. Z score formula requires us to know som...