What Is the Probability of Arriving at a Traffic Light

question 59

Multiple Choice

What is the probability of arriving at a traffic light when it is red if the red signal is flashed for 35 sec, the yellow signal for 5 sec, and the green signal for 60 sec?

• A) The probability is 0.30
• B) The probability is 0.35
• C) The probability is 0.45
• D) The probability is 0.40

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Definitions:

Randomly Assigned

A method used in experiments where participants are allocated to different groups in a way that is determined entirely by chance.

Experimental Groups

Groups in an experiment that receive the treatment or intervention being tested, as opposed to the control group which does not.

Control Groups

In experimental research, a group of subjects that does not receive the experimental treatment, serving as a comparison to evaluate the effect of the treatment.

Independent Variable

In an experiment, the independent variable is the factor that is manipulated to see if it causes a change in the outcome or dependent variable.