1.26 The admissions office wants to estimate the cost of textbooks for students at our college. Let the variable x 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 be used to estimate the average cost for all students.

a. Describe the parameter the admissions office wishes to estimate.

b. Describe the population.

c. Describe the variable involved.

d. Describe the sample.

e. Describe the statistic and how you would use the 100 data values collected to calculate the statistic.