The Length of Time a Traffic Signal Stays Green (Nicknamed

question 30

Multiple Choice

The length of time a traffic signal stays green (nicknamed the "green time") at a particular intersection follows a normal probability distribution with a mean of 200 seconds and the standard
Deviation of 10 seconds. Use this information to answer the following questions. Which of the
Following describes the derivation of the sampling distribution of the sample mean?

• A) The means of a large number of samples of size n randomly selected from the population of "green times" are calculated and their probabilities are plotted.
• B) The standard deviations of a large number of samples of size n randomly selected from the population of "green times" are calculated and their probabilities are plotted.
• C) A single sample of sufficiently large size is randomly selected from the population of "green times" and its probability is determined.
• D) The mean and median of a large randomly selected sample of "green times" are calculated. Depending on whether or not the population of "green times" is normally distributed, either
• The mean or the median is chosen as the best measurement of center.

---

Definitions:

Disorder of Action

A condition affecting the ability to initiate, control, or complete intentional movements or tasks, often due to neurological issues.

Broca's Area

Broca's area is a region in the frontal lobe of the brain important for speech production and language processing.

Right Hemisphere

The right half of the brain, which is typically associated with creative thinking, visual-spatial skills, and processing the emotional content of language.

Diagram

A simplified drawing or plan that represents the essential features of something, often used for explanation or clarification.