Question

A group of people were asked if they had run a red light in the last year. 150 responded "yes", and 185 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year.

Answer 1

Answer:

150/335, or 30/67

Step-by-step explanation:

Probability is expressed as the part against the whole (a fraction). All you have to do is divide how many people ran red lights by the total...and you're done!

Have a great day!

Answer 2

The probability that a randomly chosen person would have run a red-light last year is 0.448

• Probability = required outcome ÷ total possible outcomes

• Total possible outcomes = number of 'yes' + number of 'no'

Hence,

Total possible outcomes = 150 + 185 = 335 outcomes

Number of required outcome = number of 'yes' respondent

Hence,

P(yes) = number of yes respondent /total number of responses

P(yes) = 150 / 335 = 0.448

Therefore, the probability that a randomly chosen person would have run a red-light last year is 0.448

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