Question

1. a location other than where the crime took place, but is in some way related to the crime and where evidence is found
2. a material that can be related to a single source
3. a written record of all people who have had possession of an item of evidence
4. any place where evidence maybe located to help explain events
5. evidence that (if true) proves an alleged fact, such as an eyewitness account of a crime
6. indirect evidence; evidence used to imply a fact but not prove it directly
7. material that comes from a proven or known source
8. material that connects an individual or thing to a group that share similar characteristics
9. small but measurable amounts of physical or biological material found at a crime scene
10. the elected or appointed official who represents the government in the prosecution of a crime
11. the first police officer to arrive at a crime scene
12. the location where the crime took place
13. there is always a cross transfer of evidence between a suspect and victim or locale
14. when witness or suspects create story of what happened at a crime

fill - in and short answer questions

1. most wrongful convictions seem to be the result of
2. a pair of latex gloves was found at a crime scene. a box of the same brand of latex gloves was found at a suspect’s home.

• are the gloves individual or class evidence?
• can the gloves be individualized to the box?

1. in a class of 25 students, 8 were wearing a pink shirt. in the same class, 17 students had on blue jeans. eyewitnesses all stated that the suspect was in the class, and wearing both a pink shirt and blue jeans. according to the laws of probability, what percent of the class could be the suspect? show your work.

Explanation:

1. M. secondary crime scene
2. J. individual evidence
3. A. chain of custody
4. F. crime scene
5. G. direct evidence
6. B. circumstantial evidence
7. E. control sample
8. C. class evidence
9. N. trace evidence
10. H. district attorney
11. I. first responder
12. L. primary crime scene
13. K. Locard exchange principle
14. D. collusion

1. Most wrongful convictions seem to be the result of faulty eyewitness testimony, mishandled evidence, or false confessions.

16.

• The gloves are class evidence because they are of a common brand and not unique to a single source without further individual - identifying characteristics.
• No, the gloves cannot be individualized to the box just based on the brand being the same. There is no unique connection established between the specific gloves found at the crime scene and the box found at the suspect's home.

17.

Step1: Use the formula for the intersection of two events

Let \(A\) be the event of wearing a pink shirt and \(B\) be the event of wearing blue jeans. We use the formula \(P(A\cap B)=\frac{n(A\cap B)}{n(S)}\), where \(n(A) = 8\), \(n(B)=17\), and \(n(S)=25\). By the inclusion - exclusion principle \(n(A\cap B)=n(A)+n(B)-n(A\cup B)\). Since \(n(A\cup B)\leq n(S) = 25\), the maximum value of \(n(A\cap B)\) is \(\min(n(A),n(B)) = 8\).

Step2: Calculate the percentage

The percentage of students who could be the suspect is \(\frac{n(A\cap B)}{n(S)}\times100\). Substituting \(n(A\cap B) = 8\) and \(n(S)=25\) into the formula, we get \(\frac{8}{25}\times100 = 32\%\)

Answer:

32%