A Researcher Wishes to Test Whether the Proportion of College

question 22

Essay

A researcher wishes to test whether the proportion of college students who smoke is the same
in four different colleges. She randomly selects 100 students from each college and records
the number that smoke. The results are shown below. $$\begin{array} { r | c c c c } & \text { College A } & \text { College B } & \text { College } \text { C } & \text { College D } \\\hline \text { Smoke } & 17 & 26 & 11 & 34 \\\text { Don't Smoke } & 83 & 74 & 89 & 66\end{array}$$ Use a 0.01 significance level to test the claim that the proportion of students smoking is the
same at all four colleges.

---

Definitions:

Activity-based Costing

A methodology that assigns manufacturing overhead costs to products in a more logical manner based on the activities that incur costs.

Floral Bouquets

An arrangement of flowers, typically designed and wrapped for decorative or gifting purposes.

Plantwide Overhead Rate

A single overhead absorption rate used throughout an entire plant or factory, applied to all production units equally.

Activity-based Costing

A costing method that allocates overhead costs to specific activities, providing more accurate product costing.