The Red Cross Wanted to Know Whether an Ad Campaign

question 45

Multiple Choice

The Red Cross wanted to know whether an ad campaign designed to persuade people to donate blood actually increased blood donations.For a sample of N = 4 blood donation centers,the mean increase in blood donations was 10 pints,with a standard deviation of 2 pints.If the Red Cross could collect data from the entire population of blood donation centers,what would one expect the population standard deviation to be?

• A)2
• B)2.31
• C)2.67
• D)20

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Definitions:

Feeding Disorders

Complex conditions characterized by abnormal eating behaviors and potentially serious nutritional and psychological consequences.

Lifetime Prevalence

The proportion of individuals in a population who have experienced a particular disorder at any point in their lives.

Bulimia Nervosa

An eating disorder characterized by episodes of binge eating followed by inappropriate methods of weight control, such as vomiting or excessive exercise.

Caucasians

A term historically used to refer to people of European descent, though it is considered outdated and imprecise in describing ethnic or racial identities.