In the fall, a certain college plans to continue to offer online classes for 30% of its courses. However, the college administrator wonders if this is too much or too little when compared to student preference. The college administrator is interested in determining the proportion of college students that prefer the online format. The administrator randomly selects 125 students, conducts a survey, and finds that 48 of these students prefer the online format. (6 marks)

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a. [1 mark] Describe the parameter of interest in the context of the question.

b. [4 marks) Find the 90% confidence interval for the parameter in part (a). Be

sure to check the required condition(s) to validate your interval estimate.

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c. [1 mark] Interpret the 90% confidence interval you calculated in part (b) in the

context of the question.