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# IF YOU WERE PRESENTED WITH A PROBABILITY OF -35% THAT EVENT A WOULD

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Author: Christine Farr
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I. If you were presented with a probability of -35% that event A would happen which of the following statements best describes the probability?a. There is a 35% chance that event A will not happenb. There is a 35% chance that event A will happenc. There is a 35% chance that event A may or may not happend. None of the above2.
Consider the following contingency table:
Likes the opera

male

female

yes

136

224

no

104

36

a) What is the probability of a female does not like the opera?b) What is the probability of a male and female both liking opera?III. Which of the following statements or formulas is correct about conditional probabilities?a. A formula for determining conditional probability is P of A given B is equal to P(A) and P(B) divided by the P(B)b. A formula for determining conditional probability of A given B is equal to the P(A) if A and B are independentc. Both A and B are correctd. None of the above

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