Alice needs to pass two different exams. She believes that there is a probability of 32 % of passing the first exam. If she passes the first exam, then the probability of passing the second exam is 66 %. However, if she fails in the first exam, then Alice thinks that the probability of passing the second exam is just 57 %. (a) What is the probability that Alice passes both exams? (Notation: do not use % in your answers but actual numerical values) (b) What is the probability that she fails in both exams? (c) What is the probability that she passes only one of the exams?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Alice needs to pass two different exams. She believes that there is a probability of 32 % of passing the first exam. If she passes the first exam,
then the probability of passing the second exam is 66 %. However, if she fails in the first exam, then Alice thinks that the probability of passing
the second exam is just 57 %.
(a) What is the probability that Alice passes both exams? (Notation: do not use % in your answers but actual numerical values)
(b) What is the probability that she fails in both exams?
(c) What is the probability that she passes only one of the exams?
Transcribed Image Text:Alice needs to pass two different exams. She believes that there is a probability of 32 % of passing the first exam. If she passes the first exam, then the probability of passing the second exam is 66 %. However, if she fails in the first exam, then Alice thinks that the probability of passing the second exam is just 57 %. (a) What is the probability that Alice passes both exams? (Notation: do not use % in your answers but actual numerical values) (b) What is the probability that she fails in both exams? (c) What is the probability that she passes only one of the exams?
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