A Researcher Records the Number of Mistakes Made During a Memory

question 55

Multiple Choice

A researcher records the number of mistakes made during a memory skills task.He finds that the probability that participants in this study made 0 mistakes is p = .22;made 1 mistake is p = .30;made 2 mistakes is p = .16;made 3 mistakes is p = .12;and made 4 or more mistakes is p = .25.Is this probability distribution accurate?

• A)Yes,it distributes all possible outcomes for the random variable.
• B)No,one of the outcomes is stated as "or more."
• C)No,the probability distribution does not sum to 1.0.
• D)both B and C

---

Definitions:

Representativeness Heuristic

A cognitive shortcut that involves judging the probability of an event by its similarity to a prototype.

Cognitive Map

A mental representation of one's physical environment, helping individuals navigate and understand spatial information.

Algorithm

A step-by-step procedure or formula for solving a problem or completing a task in a finite number of steps.

Base-Rate Information

Statistical information about the frequency or prevalence of a phenomenon, event, or characteristic within a given population.