Question

A therapist believes that the best way to treat people with phobia is to have the client face his/her fears "one step at a time" by first setting small goals and then working up to larger goals until the fear is overcome. To test this idea, the therapist took 30 phobias and randomly assigned each to one of two treatment conditions: a counseling condition in which the client received background information about phobias or a goal-setting condition in which the client also performed small exercises to help overcome the fear. After treatment, each client's phobia was assessed on a 10 point scale (1=not fearful, 10=extremely fearful). Is the goal-setting therapy more effective? The appropriate statistical test for the study above is: one sample t test one sample z test correlated groups t test independent groups t test

          A therapist believes that the best way to treat people with phobia is to have the client face his/her fears "one step at a time" by first setting small goals and then working up to larger goals until the fear is overcome. To test this idea, the therapist took 30 phobias and randomly assigned each to one of two treatment conditions: a counseling condition in which the client received background information about phobias or a goal-setting condition in which the client also performed small exercises to help overcome the fear. After treatment, each client's phobia was assessed on a 10 point scale (1=not fearful, 10=extremely fearful). Is the goal-setting therapy more effective?

The appropriate statistical test for the study above is:

one sample t test
one sample z test
correlated groups t test
independent groups t test

A therapist believes that the best way to treat people with phobia is to have the client face his/her fears "one step at a time" by first setting small goals and then working up to larger goals until the fear is overcome. To test this idea, the therapist took 30 phobias and randomly assigned each to one of two treatment conditions: a counseling condition in which the client received background information about phobias or a goal-setting condition in which the client also performed small exercises to help overcome the fear. After treatment, each client's phobia was assessed on a 10 point scale (1=not fearful, 10=extremely fearful). Is the goal-setting therapy more effective?

The appropriate statistical test for the study above is:

one sample t test
one sample z test
correlated groups t test
independent groups t test

Added by Alberto K.

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