Question

Terms ana logic of ANOVA Aa Aa Arachnophobla is the fear of spiders. People with arachnophobia suffer to different degrees, but they tend to react ntensely to visible signs of the presence of spiders, such as webs The director of a clinic decides to investigate diferent treatment types for arachnophobia. She gathers three groups of clients: One group receives in vivo flooding, which involves prolonged ar repeated exposure to the actual anxiety-producing stimuli. The second group receives imaginal flooding, which involves the same techniques as in vivo flooding, except the exposure occurs in the client's imagination. The third group receives no treatment. The results come in, and a statistician conducts an analysis of variance The is that at least ane of the population means is different from another (in other words, there is an effect of at least one of the treatments). The is that there is no difference between the population means (in other words, there is no treatment effect). The treatment type is The treatments (in vivo flooding, imaginal flooding, and no treatment) are Which of the following might contribute to between-treatments variance? Check all that apply, Individual differences in the resistance of a person with arachnophobia to any form of treatment Systematic differences caused by in vivo flooding being more effective than imaginal flooding Flaws in the tool used to measure the pretreatment and posttreatment severity of the arachnophoblia

Answer 1

1. The alternative hypothesis is that at least one of the population means is different from another.

2. The null hypothesis is that there is no difference between the population means.

3. The treatment type is the independent variable.

4. The treatments are the levels of the independent variable.

5. Option 1 and Option 3 can contribute to between-treatments variance.