A University Is Studying the Proportion of Students Retained in Various

question 14

Multiple Choice

A university is studying the proportion of students retained in various years.Suppose the proportion of students retained in 2009 is
And the proportion of students retained in 2010 is
.A study found a 90% confidence interval for
-
Is (-0.0398,0.0262) .Give an interpretation of this confidence interval.

• A)We are 90% confident that the proportion of students retained in 2009 is between 3.98% less and 2.62% more than the proportion of students retained in 2010.
• B)We know that 90% of students retained in 2010 between 3.98% less and 2.62% more than 2009.
• C)We know that 90% of students retained in 2009 between 3.98% less and 2.62% more than 2010.
• D)We are 90% confident that the proportion of students retained in 2010 is between 3.98% less and 2.62% more than the proportion of students retained in 2009.
• E)We know that 90% of all random samples done on the population will show that the proportion of students retained in 2009 is between 3.98% less and 2.62% more than the proportion of students retained in 2010.

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Definitions:

Patriotic

Having or expressing devotion to and vigorous support for one's country.

Armed Conflict

A contested incompatibility that concerns government and/or territory where the use of armed force between two parties results in at least 25 battle-related deaths in one calendar year.

Systematic Sampling

A sampling method where elements are selected from a larger population using a fixed, periodic interval.

HR Manager

A professional who oversees recruitment, management, and direction of the human resources and workforce in an organization.