Asked by maria

A group of people were asked if they had run a red light in the last year. 325 responded "yes", and 294 responded "no".

Find the probability that if a person is chosen at random, they have run a red light in the last year.
Answered by Steve
no way to tell.

However, the probability that they answered "yes" to the question is

325/(325+294) = 0.525

Assuming the 619 people were chosen at random.

Poorly worded problem.
Answered by john
A couple plans to have three children. What is the probability that.
a) they have all boys?
b) they have at least one girl?
Answered by vicke
couple plans to have three children. What is the probability that.
a) they have all boys?
b) they have at least one girl?
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