L. List afew valués that might occur in a sample The admissions office wants to

Question

L. List afew valués that might occur in a sample The admissions office wants to estimate the cost of textbooks for students at our college. Let the variable be the total cost of all textbooks purchased by a student this semester. The plan is to randomly identify 100 students and obtain their total textbook costs. The average cost for the 100 students will e used to estimate the average cost. A. Describe the parameter the admissions offices wishes to estimate. Describe whether the following study would most likely be "observational" or "experimental", and why it would be so. A survey examines the preferences for laundry detergent a. Describe the population b. Describe the variable involved c. Describe the sample Describe whether the following study would most likely be "observational" or "experimental", and why it would be so. Assume that you have selected 10 students enrolled at your & college and have collected data for these three variables: x: number of courses enrolled

Explanation / Answer

I am solving the first two problem since the below problems have been cut and full image is not available

Q1)

A survey examines the preferences for laundry detergent

"This is an example of experimental survey"

Reason: Since in the survey, laundry person or incharge will select a group of people that gives the cloth in the laundry and take the feedback from the customer regarding the detergent i.e. likes and dislikes, do's and dont's if any

Q2)

a) Describe the population = All students of the college

b) Describe the variable involved = Total cost of textbooks by a student for this semester

c) Describe the sample - 100 random students to approximate the average cost of the books

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