An Experiment on the Effect of Vitamin a on Cancer

question 27

Multiple Choice

An experiment on the effect of vitamin A on cancer uses two randomly chosen groups of 200 men each, one given vitamin A and the other a placebo. An estimate from a similar experiment using two groups of 1000 men each would have

• A) less bias.
• B) more bias.
• C) more variability.
• D) less variability.

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Definitions:

Intermediaries

Businesses or individuals that act as a link in the distribution process between producers and consumers, such as wholesalers or retailers.

Functions

Specific activities or tasks performed by individuals, systems, or machines within an organization to achieve certain objectives.

Reverse Logistics

The process of moving goods from their typical final destination for the purpose of capturing value, or proper disposal, including returns management and recycling.

Hewlett-Packard

An American multinational information technology company known for its wide range of hardware components as well as software and related services.