A random sample of 1% students at a small university were asked a series of questions

| August 30, 2017

Question
A random sample of 1% students at a small university were asked a series of questions such as their status as an American or international student, major, gender, age, year in school, and current GPA. Other questions were asked about levels of satisfaction with campus parking, campus housing, and campus dining. Finally, students were asked if they planned to attend graduate school within five years of their college graduation. These data are contained in the data file Finstad and Lie Study,

a. Estimate the population grade point average with 95io confidence level.

b. Estimate the population proportion of students who were very dissatisfied (code 1) or moderately dissatisfied (code 2) with parking facilities on campus. Use a 90%o confidence level.

c. Estimate the population proportion of students who were at least moderately satisfied (codes 4 and 5) with on-campus food service.

The manager of Florin’s Flower Mart obtained customer information that is stored in the data file Florin

a. Estimate the mean age of the store’s customers.

b. Estimate the population proportion of customers that are dissatisfied with the store’s delivery system.

c. Estimate the population mean amount charged to a Visa credit card.

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