Test the Given Claim About the Means of Two Populations

question 52

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. $$\begin{array} { l c c c c c c c c c c } \text { Before } & 74 & 83 & 75 & 88 & 84 & 63 & 93 & 84 & 91 & 77 \\\hline \text { After } & 73 & 77 & 70 & 77 & 74 & 67 & 95 & 83 & 84 & 75\end{array}$$

Understand the concept and calculation of odds ratios in logistic regression.

Interpret logistic regression models, including estimates and confidence intervals.

Analyze the impact of binary (indicator) variables in logistic modeling.

Recognize the role of environmental and genetic factors in disease prevalence, using myopia as an example.

---

Definitions:

Long-Term Liabilities

Obligations of a company that are due more than one year in the future, including bonds payable, long-term leases, and pension obligations.

Current Liabilities

Obligations or debts that a company is required to settle within one fiscal year or within its operating cycle.

Social Security

A government program that provides financial assistance to people with inadequate or no income, primarily the elderly, disabled, and survivors of deceased workers.

Medicare

A federal health insurance program in the United States for people aged 65 and older, and for some younger people with disabilities.