A University Wants to Increase Its Retention Rate of 4

question 40

Multiple Choice

A university wants to increase its retention rate of 4% for graduating students from the previous year.After implementing several new programs during the last two years,in 2014 the university reevaluated its retention rate using a random sample of 352 students and found the retention rate at 5%.Create a 95% confidence interval for the proportion of students (in 2014) who had been retained.

• A)Based on the data,we are 95% confident the proportion of students in 2004 who had been retained is between 1.95% and 7.05%.
• B)Based on the data,we are 95% confident the proportion of students in 2004 who had been retained is between 4% and 6%.
• C)Based on the data,we are 95% confident the proportion of students in 2004 who had been retained is between 1.16% and 8.84%.
• D)Based on the data,we are 95% confident the proportion of students in 2004 who had been retained is between 2.72% and 7.28%.
• E)Based on the data,we are 95% confident the proportion of students in 2004 who had been retained is between 1.95% and 6.05%.

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Definitions:

Type O

A blood group in the ABO system characterized by the absence of A and B antigens on red cells and the presence of anti-A and anti-B antibodies in the plasma.

Universal Recipient

An individual with Type AB positive blood, who in theory can receive blood of any type in transfusions due to the absence of anti-A or anti-B antibodies.

Type AB

A blood group in the ABO blood type system characterized by the presence of both A and B antigens on the surface of red blood cells.

Indirect Approach

A communication method where the main point is presented after providing background or supporting information.