Researchers were interested in the time it took participants to complete a simple puzzle task. Time was measured in seconds. Use this information to answer problems 11 through 14. X Z 23 34 34 65 36 48 88 83 21.65 20 48.75 11. Compute the mean reaction time. 12. Compute the standard deviation for the reaction time. 13. Convert each raw score in the distribution into a z score. Record your answers in the box above. 14. Compute the z score for the mean reaction time. (hint: think of the normal curve and the location of the mean in standard units. In other words, the mean in standard units equals...?)