University of Illinois, Urbana Champaign - ANTH 246W2 - Lecture WITH ACCURATE ANSWERS

Document Content and Description Below

Question 1 Complete 1.00 points out of 1.00 Activity: What's Your Opinion? Surveillance, Privacy, and Access to Evidence For this assignment: Make a list of pros and cons of using film, digital... , and 3D imaging for the crime scene investigator. The hints below will help you think about the appeal and issues of various types of imaging equipment in different aspects of evidence. To also help generate ideas, review these 2 videos regarding 3D imaging. Question 2 Complete 1.00 points out of 1.00 Examples of Contamination What are some examples of “contamination” that an investigator can introduce into the crime scene if proper precautions (gloves, mask, jumpsuit, clean equipment, etc.) are not taken? Please write your thoughts into the space provided below. Question 3 Complete 1.00 points out of 1.00 An Example of Comparative Analysis Listen to the scenario described and then write your thoughts below. Transcript Let’s use the example from above regarding the carpet fibers embedded in the cuts on the body of the dead female found in the field. The main suspect is her boyfriend. He has a history of domestic violence charges against her, with the most recent one being reported with a month of her murder. The carpet fibers in the body are analyzed and their actual make-up is comprised of a specific proportion of nylon and polypropylene, and the chemicals used to dye the carpet are identified and their proportions are also known. When compared to carpet fibers in the boyfriend’s house, they are an exact match. Question 4 Correct 1.00 points out of 1.00 A body was recovered from a drainage ditch and brought to the county’s Office of the Medical Examiner. Upon examination of the body, the pathologists discovered that the deceased had a hip replacement, and they were able to read the brand (Hipster Manufacturing) and serial number (167482828) for the metal hip socket. The case investigator contacted the company to see if they could tell him anything further about the particular serial number. Hipster Manufacturing stated that the serial number represented a batch of 100 hip replacement parts that were distributed throughout the U.S. at random, each with this same serial number on it. By looking up additional statistics on all hip replacement companies servicing the U.S., the investigator found that at present there are 89,000 hip replacement parts. Therefore, the frequency of the particular part found in the body is 1 of the 100 out of 89,000 present in the U.S., and can be calculated at 100/89,000. Therefore, the probability of having serial #167482828 = P(serial # 167482828) = ? Question 5 Correct 1.00 points out of 1.00 Upon further investigation, the investigators noticed that the individual had traces of soil embedded under his fingernails. This soil was identified as bentonite. About 5% of the U.S. population lives in areas where this type of clay is found. A missing persons report file for T.W. Dwight came up, and he had undergone hip surgery several years ago and happened to live in an area that had bentonite in the soil. When Dwight's physician was contacted and asked about the serial number documented in Dwight's medical records for his hip replacement, the serial number matched that found in the John Doe. What is the probability for both the serial number and the bentonite to be found in combination? (Assume these 2 events are independent.) Question 6 Correct 1.00 points out of 1.00 How probable is it that the John Doe and T.W. Dwight are the same person? [Show More]

Last updated: 2 years ago

Preview 1 out of 4 pages