Question

A Aa 2. When to use analysis of variance Arachnophobia is the fear of spiders. People with arachnophobia suffer to different degrees, but they tend to react intensely to visible signs of the presence of spiders, such as webs The director of a clinic decides to investigate different treatment types for arachnophobia. She gathers three groups of clients: One group receives in vivo flooding, which involves prolonged or repeated exposure to the actual anxiety-producing stimuli. The second group receives imaginal vivo flooding, except the exposure occurs in the client's imagination. The third group receives no treatment. flooding, which involves the same techniques as in The clinic director is studying three independent groups. She should use determine if there are differences between the three groups because the probability of a to error would be than the chosen alpha level if she performed multiple comparisons The of arachnophobia. is that at least one of the treatment types hes an effect on the posttreatment severity The arachnophobia. is that the treatment types have no effect on the posttreatment severnty of 2. When to use analysis of variance Arachnophobia is the fear of spiders. People with arachnophobia suffer to different degrees, but they tend to react intensely to visible signs of the presence of spiders, such as webs. The director of a clinic decides to investigate different treatment types for arachnophobia. She gathers three groups of clients: One group receives in vivo flooding, which involves prolonged or 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 oocurs in the client's imagination. The third group reoeives no treatment. to The clinic director is studying three independent groups. She should use determine if there are differences between the three groups because the probability of a error would be than the chosen alpha level if she performed multiple comparisons. is that at least one of the treatment types has an effect on the posttreatment severity The of arachnophobia. The is that the treatment types have no effect on the posttreatment severity of arachnophobia

Answer 1

She should use Anova one way to determine if there are difference

because the probability of type i error would be less than the chosen alpha if she performed multiple comparison

the alternate hypothesis is that at least one of the treatment types has an effect...

the null hypothesis is that the treatment types have no effect ...

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