A psychologist would like to examine the relative effectiven…
A psychologist would like to examine the relative effectiveness of three different therapy techniques for the treatment of mild phobias. A sample of 15 individuals who display moderate fear of spiders were recruited to participate in the study. These individuals were then randomly assigned (n = 5) to one of the three different therapies. After six weeks of therapy each participant’s fear of spiders was evaluated, scores ranged from 1 to 5 (1 = no fear, 2 = some fear, 3 = neutral, 4 = afraid, 5 = extremely afraid). Use the data below to determine if the three therapies differed in how effectively they treated the participant’s fear of spiders. **Report the observed value of F to 4 decimal places. Fear of Spiders Ratings for the Three Groups Therapy A Therapy B Therapy C 5 4 3 5 3 1 5 2 1 4 4 1 4 2 3