Does Taking Large Amounts of Vitamins Protect Against Cancer? to Study

question 10

Multiple Choice

Does taking large amounts of vitamins protect against cancer? To study this question, researchers enrolled 29,000 Finnish men, all smokers over the age of 50. Half of the men, selected at random, took vitamin supplements, and others took a dummy pill that has no active ingredient. The researchers followed all the men for eight years. At the end of the study, men in the vitamin group were no less likely to have cancer than men in the other group. This study cast doubt on the popular idea that taking lots of vitamins can reduce the risk of cancer.
The study design looked like this:
The statistical name for this study design is

• A) simple random sample.
• B) stratified random sample.
• C) randomized comparative experiment.
• D) multistage sample.
• E) observational study.

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Definitions:

Consumption

The process of using goods and services to fulfill needs or desires, typically referring to the end-use of products by individuals or households.

Mass Production

The manufacturing of large quantities of standardized products, often on assembly lines, enabling economies of scale.

Operations Management

This sector of management deals with formulating and managing the processes involved in producing and innovating business operations for the production of goods or services.