Math Problem Statement
A group of people were asked if they had run a red light in the last year. The number of people that responded yes is 164 and no is 351. Find the probability that if a person is chosen at random, he/she has run a red light in the last year. Round to two decimal places.
Solution
To find the probability that a randomly chosen person has run a red light in the last year, we use the formula for probability:
Here, the number of people who responded "yes" is 164, and the total number of people surveyed is the sum of those who said "yes" and those who said "no":
Thus, the probability is:
Rounding to two decimal places:
So, the probability is 0.32.
Would you like more details or have any questions?
Here are five related questions:
- What is the probability that a person chosen at random has not run a red light?
- How would the probability change if 50 more people responded "yes"?
- If you repeated this survey with twice as many people, what would you expect the probabilities to be?
- Can you express the probability as a percentage instead of a decimal?
- How could you use these probabilities to estimate how many people in a larger population might have run a red light?
Tip: Probabilities always range between 0 and 1, and a probability closer to 1 means a higher likelihood of the event occurring.
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Math Problem Analysis
Mathematical Concepts
Probability
Statistics
Formulas
P(event) = number of favorable outcomes / total number of outcomes
Theorems
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Suitable Grade Level
Grades 6-8