A Type of Sampling (Independent or Paired), Sample Size(s), and a Figure

question 96

Multiple Choice

A type of sampling (independent or paired) , sample size(s) , and a figure showing the results of preliminary data analyseson the sample(s) are provided. The intent is to employ the sample data to perform a hypothesis test to compare the meansof the two populations from which the data were obtained. Use the information provided to decide which procedureshould be applied.
-Independent; $\mathrm { n } _ { 1 } = 12$ and $\mathrm { n } _ { 2 } = 12$ . A normal probability plot for each sample and a back-to-back stem-and-leaf diagram are given below.



$\begin{array}{r|l|l}997665 & 0 & 67789 \\420 & 1 & 0025 \\0 & 2 & 2 \\7 & 3 & 0 \\0 & 4 & 3\end{array}$

• A)Paired t-test
• B) Mann-Whitney test
• C) Pooled t-test
• D) Paired Wilcoxon signed-rank test

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Definitions:

Obstructive Lung Diseases

A category of respiratory conditions that involve blockages or narrowing of the airways, leading to difficulty breathing, e.g., asthma, COPD.

Chronic Bronchitis

A long-term inflammation of the bronchi in the lungs, often characterized by coughing and breathing difficulties.

Respiratory Capacity

The total amount of air the lungs can hold, encompassing tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume.

Vital Capacity (VC)

The maximum amount of air a person can exhale after a maximum inhalation, measuring lung health and function.