Answer Happy

Which of these is not one of the ways t-scores differ from z-scores The t-score distribution has a mean of 50 and a standard deviation of 10, and the z-score distribution has a mean of O and a standard deviation of 1. The t-score uses the sample standard deviation, and the z-score used the population standard deviation. ▶ The chart for finding the critical t-score value has separate headings for one- tailed and two-tailed hypotheses, while the critical value chart for z-scores does not. The t-score uses the population standard deviation and the z-score uses the sample standard deviation.