A Norwich University administrator is trying to determine the proportion of students who have been in the library building this semester.  Determine if each of the following is an example of a simple random sample, stratified random sample, or convenience sample. a)     He randomly selects 15 members from the corps of cadets and 10 civilian students.  Answer b)     He obtains a list a student ID numbers, and randomly draws 25 numbers from the list. Then he contacts these 25 people and asks them directly.  Answer c)     He stands behind a table at the Wise Campus center and asks the first 100 people who pass by if they have been in the library this semester.  Answer

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.