What should be the sample size if you were to construct the 90% confidence interval w

rissyboo07

New member
Joined
Jul 5, 2016
Messages
2
A staff member of the office of institutional research in a large university wants to estimate the proportion of students that fail the Calculus I course. A faculty member mentioned to her that 35% of the students fail the course.

What should be the sample size if you were to construct the 90% confidence interval with the margin of error 3%?
 
A staff member of the office of institutional research in a large university wants to estimate the proportion of students that fail the Calculus I course. A faculty member mentioned to her that 35% of the students fail the course.

What should be the sample size if you were to construct the 90% confidence interval with the margin of error 3%?
What are your thoughts? What methods, formulas, algorithms, or other tools do you think your instructor expects you to apply? What have you tried? How far have you gotten? Where are you stuck?

Please be complete ("Read Before Posting"). Thank you! ;)
 
Top