Solved

A Medical Researcher Is Interested in How Weight Gain in Children

question 71

Multiple Choice

A medical researcher is interested in how weight gain in children from third-world countries is affected by the source of protein (fish, roots and tubers, or nuts and oilseeds) and by level of protein intake (low, defined as less than 0.56 grams per kilogram of weight, or high) .The researcher wants to test the relative efficacy of each protein source, controlling for the level of protein intake but not testing it as the main variable of interest.For this purpose, she classifies a group of children in an impoverished village in a third-world country into either high or low protein intake.Then, the researcher randomly assigns 50 children from each category to a group where the children will receive food once a day that will emphasize one of the three protein sources.You can assume that the total level of protein intake is not affected (it's effects take a longer time to show and depend largely on the other meals the children have at home) .In this experiment, the source of protein intake is ______.

Definitions:

Serial Communications Interface

A type of data transfer where information is sent sequentially, one bit at a time, over a communication channel.

WT ECU

A Weight Terminal Electronic Control Unit; a device designed for managing and monitoring weight-related data in vehicular and industrial systems.

Cruise Control

An electronic system that automatically controls the speed of a vehicle, maintaining a consistent speed as set by the driver.

Electrical Circuit

An electrical circuit is a pathway or loop that allows for the flow of electric current, consisting of sources, connections, and electrical components.