Chapter 3: Q. 35 (page 217)
What is conditional probability?
The likelihood of receiving event A if event B has already happened is known as conditional probability.
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Write the symbols for the probability that a player is an infielder and is not a great hitter.
Use the following information to answer the next four exercises. Table 3.15 shows a random sample of musicians and how they learned to play their instruments.
Find P(musician is a female OR is self taught).
U and V are mutually exclusive events. P(U) = 0.26; P(V) = 0.37. Find:
a. P(U AND V)
b. P(U|V)
c. P(U OR V)
Approximately people over age five live in the United States. Of these people, speak a language other than English at home. Of those who speak another language at home, speak Spanish.
Let:E = speaks English at home; E′ = speaks another language at home; S = speaks Spanish;
Finish each probability statement by matching the correct answer.
Use the following information to answer the next six exercises. There are 23 countries in North America, 12 countries in
South America, 47 countries in Europe, 44 countries in Asia, 54 countries in Africa, and 14 in Oceania (Pacific Ocean
region).
Let A = the event that a country is in Asia.
Let E = the event that a country is in Europe.
Let F = the event that a country is in Africa.
Let N = the event that a country is in North America.
Let O = the event that a country is in Oceania.
Let S = the event that a country is in South America.
Find P(E).
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