A University Wants to Increase Its Retention Rate of 4

question 18

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 2004 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 2004) 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:

Epigenetic Marks

Changes in DNA and histone proteins that impact how genes are expressed, without modifying the DNA sequence.

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms.

Protein Molecules

Large biomolecules comprised of one or more long chains of amino acid residues which play critical roles in the body, including catalyzing metabolic reactions and DNA replication.

Epigenetic Mark

Alterations to DNA and histone proteins that influence gene activity without changing the DNA sequence itself.