Construct a Confidence Interval for µD, the Mean of the Differences

question 10

Multiple Choice

Construct a confidence interval for µd, the mean of the differences d for the population of paired data. Assume that the population of paired differences is normally distributed.
-A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The results are given below. Construct a 95% confidence interval for the mean difference between the before and after scores.
$\begin{array}{lllllllllll}\text { Before } & 74 & 83 & 75 & 88 & 84 & 63 & 93 & 84 & 91 & 77 \\\hline \text { After } & 73 & 77 & 70 & 77 & 74 & 67 & 95 & 83 & 84 & 75\end{array}$

• A) \(0.2 < \mu _ { \mathrm { d } } < 7.2\)
• B) \(1.0 < \mu _ { \mathrm { d } } < 6.4\)
• C) \(1.2 < \mu _ { \mathrm { d } } < 5.7\)
• D) \(0.8 < \mu _ { \mathrm { d } } < 6.6\)

Assess the role of community psychologists in advocating for social justice through research.

Explain the concept of intersectionality and its relevance in community psychology.

Understand the fundamentals of social exchange theory.

Appreciate the significance of values and approaches in community psychology.

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Definitions:

Inherently Adaptive

Describes traits or behaviors that naturally enhance an organism's ability to adjust to and survive in its environment.

Social Situations

Contexts involving interactions between individuals or groups.

Modified Emotions

Altered or adjusted feelings and emotional responses that may differ from the original or natural state.

Voluntarily

Acting or done willingly and without obligation or compulsion.