University students are supposed to spend on average 3 hours of time per week fo

Question

University students are supposed to spend on average 3 hours of time per week for every credit hour they take. Last year, 263 randomly selected University seniors were contacted and asked how much total time they spent on their studies over the last week and how many credit hours they currently take.

(a) In this study, what is the population (be precise) and what is the sample?

(b) What do you think is the population parameter of interest? How could one compute a sample estimate of this population parameter?

(c) Under which circumstances would it be reasonable to assume that the average time spent per credit hour (across students and courses) computed from the responses is normally distributed?

Explanation / Answer

A) Population is all university students and sample is randomly selected 263 students

B) Parameter of interest is Time spent on studies per credit hour.

Sample estimate of population parameter = Average of each of 263 students

(Total time spent over last week/ Credit hours taken)

c) With large sample size, we can assume normality of sample data

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.