Suppose a researcher runs a one-way between-subjects ANOVA and finds the following Source    SS       df        MS           F            Between  50      2        25           7.5001 Within      60    18       3.3333                        Total         110           Use the information to calculate eta-squared. **Report your answer as a proportion out to 4 decimal places.

When the null hypothesis is true, the between-group variability reflects only:

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 4 3 1 3 2 2 4 3 2 5 3 3 5 2 2

In all F distributions, the _____ value of F is _____.

What is the critical score for the therapy and fear of spiders problem at an alpha level of .05? **Report your answer to 2 decimal places.

Suppose a researcher runs a one-way between-subjects ANOVA and reports the following:  . Based on this information what are the ?

Suppose a researcher runs a one-way between-subjects ANOVA and finds the following Source    SS       df        MS           F            Between  50      2        25           6.4286 Within      70    18       3.8889                        Total         120           Use the information to calculate eta-squared. **Report your answer as a proportion out to 4 decimal places.

The F distribution takes on different shapes depending on the values of _____ and _____ associated with it.

In a one-way ANOVA within groups variability include(s)_________.

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 2 1 5 2 2 5 2 3 3 3 2 3 2 3