Use the Paired T-Interval Procedure to Obtain the Required Confidence

question 94

Multiple Choice

Use the paired t-interval procedure to obtain the required confidence interval. You may assume that the conditions forusing the procedure are satisfied.
-A test of abstract reasoning is given to a random sample of students before and after completing a formal logic course. The results are shown below. $\begin{array} { c c } \text { Before } & \text { After } \\\hline 74 & 68 \\81 & 86 \\85 & 83 \\67 & 74 \\92 & 95 \\71 & 66 \\61 & 67 \\78 & 81 \\64 & 71 \\80 & 88\end{array}$
Determine a 95% confidence interval for the difference between the mean score before completing
The course and the mean score after completing the course.

• A)-0.8 to 6.0
• B)-1.4 to 6.6
• C)-1.7 to 6.9
• D)-1.1 to 6.3

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Definitions:

Client-centered Therapy

A humanistic approach to therapy that emphasizes empathy, genuineness, and unconditional positive regard towards the client.

Cognitive Behavioral Treatments

Therapeutic interventions that aim to alter problematic thoughts and behaviors through a structured, goal-oriented process.

Placebo Treatments

Interventions without active ingredients designed to mimic the experience of real treatments, used in research to assess the efficacy of new treatments.

Person-centered Therapy

A therapeutic model that empowers the client, emphasizing unconditional positive regard, empathy, and congruence in the therapeutic relationship.