Test the Given Claim About the Means of Two Populations

question 28

Essay

Test the given claim about the means of two populations. Assume that two dependent samples have been
randomly selected from normally distributed populations. 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. At the
0.05 significance level, test the claim that the mean score is not affected by the course. Include your null and
alternative hypotheses, the test statistic, P-value or critical value(s), conclusion about the null hypothesis, and
conclusion about the claim in your answer. $$\begin{array} { | l l l l l l l l l l l | } \hline \text { Before } & 74 & 83 & 75 & 88 & 84 & 63 & 93 & 84 & 91 & 77 \\\hline \text { After } & 73 & 77 & 70 & 77 & 74 & 67 & 95 & 83 & 84 & 75 \\\hline\end{array}$$

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Discard

The act of getting rid of something that is no longer useful or desired.

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Positive psychological changes experienced as a result of struggling with highly challenging life circumstances or traumatic events.

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Describes an event or experience that is extremely distressing or disturbing, often leading to lasting psychological impact.

PTSD

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