A physical therapist tests the reliability of the active knee extension test for hamstring exibility (degrees). She administers the active knee extension test to 20 subjects on three separate days. The following table contains the resulting data. Day 1 Day 2 Dayr 3 50 47 55 24 22 27 3? 40 40 24 25 22 45 43 41 25 24 21 3? 33 39 30 29 27 39 37 38 30 26 25 20 24 20 32 23 33 33 29 30 44 41 41 34 33 33 35 32 36 33 36 30 38 42 40 40 45 36 4? 52 46 1. Perform a repeated measures ANOVA on the data in the table and construct an ANOVA summary table. Does the ANOVA suggest that systematic differences exist across trials? 2. Calculate the intraclass correlation coefficient for models 2,1 and 3,1. 3. Calculate the standard error of measurement. 4. Assume a person has an observed score of 35. Construct a 95% Cl about this subject's observed score to estimate the interval in which we think that person's true score lies. 5. Calculate the minimal difference using a 95% Cl