Lemma
EasyConditional probability
OpenStax, Statistics §3.4 Contingency Tables · Try It 2 · Probability · Conditional probability

Contingency Tables · Try It 2

shows a random sample of 200 cyclists and the routes they prefer. Let M = males and H = hilly path.


(a) Out of the males, what is the probability that the cyclist prefers a hilly path?
(b) Are the events being male and preferring the hilly path independent events?

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OpenStax, Statistics · §3.4 Contingency Tables · Try It 2

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