Although the Prevalence of the Sickle-Cell Anemia Gene Is Higher

question 61

Multiple Choice

Although the prevalence of the sickle-cell anemia gene is higher in West Africa than in the United States, __________ prevent cells from sickeling, so fewer Africans than African Americans suffer from the disease.

• A) tropical weather conditions
• B) West African agricultural crops
• C) traditional medicines
• D) outdoor labor

Appreciate how businesses use social networking sites for connecting with customers, sharing news, and fostering idea exchanges.

Understand the elements of effective digital communication, including content creation for blogs.

Explain the concept of crowdsourcing and its benefits in collaborative online communities.

Differentiate various types of online communities and their target audiences.

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Definitions:

Independent Variables

Variables in an experiment or observational study that are manipulated or categorized to observe their effect on dependent variables.

Dependent Variable

The variable in a study or experiment that is expected to change in response to changes in the independent variable.

Multiple Regression Equation

An equation that models the linear relationship between a dependent variable and multiple independent variables.

Expected Value

A measure of the central location of a random variable.