Worksheet 3: Marginal Decision Rule Name Direction

Worksheet 3 Marginal Decision Rulename Directi

Choose any activity of interest (like studying or exercising). 1. What is the activity? Answer: 2. How would you measure the Marginal Benefits of the activity? Answer: 3. How would you measure the Marginal Costs of the activity? Answer: 4. State the Marginal Decision Rule. Answer: 5. On the graph below, graph the Marginal Benefit and Marginal Cost, and mark the optimal quantity of the activity, according to the Marginal Decision Rule.

Paper For Above instruction

The concept of marginal decision-making is fundamental in economics, serving as a guiding principle for individuals and organizations in their pursuit of optimal choices. This principle posits that decisions should be made based on the comparison between marginal benefits and marginal costs associated with incremental changes in a particular activity. To understand how this operates in practical scenarios, let us consider the activity of exercising, which is commonly chosen for its health and well-being benefits.

Firstly, the activity selected here is exercising. Exercise, as a physical activity, often involves considerations regarding time, effort, and resources committed toward physical fitness. This activity is widespread, with individuals engaging in various forms such as running, weightlifting, yoga, or sports, motivated by health improvements, stress relief, or social factors. For this discussion, we focus on the marginal benefits and costs associated with each additional unit of time or effort spent on exercising.

To measure the marginal benefits of exercising, individuals typically evaluate the incremental advantages gained from each additional session or minute of exercise. These benefits can include improved cardiovascular health, increased strength and endurance, mental well-being, and better sleep quality. Quantifying these benefits often involves subjective assessments, such as personal satisfaction or health improvements, but they can also be measured through objective indicators, such as decreases in blood pressure or cholesterol levels. For instance, a person might perceive that each additional 30-minute exercise session provides a certain increase in energy levels and mood, which can be estimated via self-rated scales or health statistics.

On the other hand, marginal costs in exercising encompass the additional resources expended for each incremental unit of activity. These costs include time devoted that could have been used for other pursuits, physical fatigue, nutritional expenses, or potential injury risks. Measuring marginal costs involves assessing the opportunity cost of time—what other activities or responsibilities are foregone to engage in exercise—as well as tangible costs like purchasing workout gear or paying gym memberships. For example, if a person spends an extra hour exercising, the marginal cost might be quantified as the value of the next best activity they are sacrificing, such as working, studying, or relaxing.

The marginal decision rule entails continuing the activity as long as the marginal benefits exceed or equal the marginal costs. Formally, the rule states that individuals should increase their activity until the point where marginal benefits equal marginal costs. When marginal benefit exceeds marginal cost, increasing activity adds net value; when marginal cost surpasses benefits, it is optimal to stop or reduce the activity. Applying this to exercising, the individual would continue to workout until the additional health or satisfaction gained from extra exercise equals the physical or opportunity costs incurred. At the point where they are equal, the optimal level of exercise is achieved.

Graphically, the marginal benefit and marginal cost curves are typically downward and upward sloping, respectively. The marginal benefit curve usually declines as activity increases, reflecting diminishing returns or satisfaction, while the marginal cost curve increases, representing rising effort or resource expenditure. The intersection point indicates the optimal quantity of activity—the most efficient level at which marginal benefits equal marginal costs. Marking this point on the graph signifies the individual’s decision boundary, guiding them to cease increasing activity once the marginal benefits no longer justify the additional costs.

In essence, the marginal decision rule encourages rational decision-making by balancing incremental gains and losses. Whether in exercise, studying, or other pursuits, applying this principle ensures resource allocation aligns with maximizing net benefits. The graphical representation reinforces understanding of the optimal activity level, promoting efficiency and resourcefulness.

References

• Mankiw, N. G. (2020). Principles of Economics (9th Edition). Cengage Learning.
• Krugman, P., & Wells, R. (2018). Economics (5th Edition). Worth Publishers.
• Nechyba, T. (2010). Microeconomics: An Intuitive Approach with Calculus. Cengage Learning.
• Frank, R. H., & Bernanke, B. S. (2021). Principles of Economics (6th Edition). McGraw-Hill Education.
• Hubbard, R. G., & O’Brien, A. P. (2018). Microeconomics (7th Edition). Pearson.
• Freeman, R. (2017). Economics (7th Edition). Pearson.
• Perloff, J. M. (2019). Microeconomics: Theory and Applications with Calculus. Pearson.
• Tucker, I. (2017). Principles of Microeconomics. Routledge.
• Kolstad, C. D. (2019). Environmental Economics (2nd Edition). Oxford University Press.
• Varian, H. R. (2014). Intermediate Microeconomics: A Modern Approach. W.W. Norton & Company.