### Understanding Experimental Design: Treatment and Control GroupsIn this example, a pet store owner wants to determine if a new commercial will attract more customers compared to an old one. To test this, the owner conducts an experiment with a focus group of 500 randomly selected viewers.#### Experimental Setup1. **Participants**: 500 randomly selected viewers.2. **Groups**: - **New Commercial Group**: 250 viewers watch the new commercial. - **Old Commercial Group**: 250 viewers watch the old commercial.3. **Task**: Each participant rates the commercial they watched.### Key Concept: Treatment Group**Question:** Which is the treatment group?**Answer:** In an experiment, the treatment group is the group that receives the treatment being tested—in this case, the new commercial. Therefore, the **treatment group** consists of the **250 viewers who watched the new commercial**.The other group of 250 viewers who watched the old commercial serves as the **control group**. This group is not exposed to the new treatment (the new commercial) and is used as a baseline to compare the effects of the new commercial.By comparing the ratings from both groups, the pet store owner can assess the effectiveness of the new commercial in attracting more viewers. This comparison helps to isolate the effects of the new commercial from other variables that might affect viewer ratings.

By definition, the treatment group is essentially defined as the group in the experiment, where the…

Answered: A pet store owner wants to know if a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A pet store owner wants to know if a new commercial will bring in more people than the old one. Out of a focus group of 500 randomly selected viewers, 250 watch the new commercial and 250 watch the old one. The owner then has each group rate the commercials. Which is the treatment group?