Escobar et al. (A-3) performed a study to validate a translated version of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire used with Spanish-speaking patients with hip or knee osteoarthritis. For the 76 women classified with severe hip pain, the ob golaiD :x :dnammoc noisseS Stat Basic Statistics 1-Sample t MTB > TTEST 34.5 C1 Type C1 in Samples in columns. Type 34.5 in the Test mean box. Click OK . Output: One-Sample T: C1 TEST OF MU 34.5 VS NOT 34.5 VARIABLE N MEAN STDEV SE MEAN 95% CI T P C1 15 33.7980 0.6303 0.1627 (33.4490, 34.1470) 4.31 0.001 FIGURE 7.2.6 MINITAB procedure and output for Example 7.2.5. EXERCISES 233 3GC07 11/24/2012 14:19:29 Page 234 WOMAC mean function score (on a scale from 0 to 100 with a higher number indicating less function) was 70.7 with a standard deviation of 14.6. We wish to know if we may conclude that the mean function score for a population of similar women subjects with severe hip pain is less than 75. Let a ¼ :01.