Draw Mohr's circle that describes each of the following states of stress.
th STAT 3600 Reference: Chapter 1 of Devore’s 8 Ed. Maghsoodloo Definition. A population is a collection (or an aggregate) of objects or elements that, generally, have at least one characteristic in common. If all the elements can be well defined and placed (or listed) onto a frame from which the sample can be drawn, then the population is said to be concrete and existing; otherwise, it is a hypothetical, conceptual, or a virtual population. Example 1. (a) All Auburn University students (N 29000 members on 2 campuses). Here the frame may be AU Telephone Directories. (b) All households in the city of Auburn. Again the frame can be the Auburn-Opelika Tel. Directory. (c) All AU COE (College of engineering) students, where the frame can be found on the web at http://www.eng.auburn.edu/info/listing-all.html Examples 1.1 and 1.2 on pp. 4-6, 1.5 on p. 11, 1.11 on pp. 20-21, and 1.14 on p. 29 of Devore’s 8 edition provide sampling from conceptual (or virtual) populations. A variable, X, is any characteristic whose value changes from one element of a population to the next and can be categorical, or quantitative. Example 2. (a) Categorical or Qualitative variable X: Examples are Grade performance in a college course; Success/Failure; Freshman, Sophomore, Junior, and Senior on a campus; Pass/Fail, Defective/ Conforming, Male/Female, etc. (b)Quantitative Variable X: Flexural Strength in MPa (Example 1.2 of Devore, p. 5), Diameter of a Cylindri