5.2 Practice

Canada has two official languages, English and French. Choose a Canadian at random and ask, “What is your mother tongue?” Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region. What probability should replace “?” in the distribution? Why?

• 0.91

• 0.09

• 0.9

• 1

Canada has two official languages, English and French. Choose a Canadian at random and ask, “What is your mother tongue?” Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region. What is the probability that a Canadian’s mother tongue is not English?

• 0.91

• 0.63

• 0.37

• 0.28

Canada has two official languages, English and French. Choose a Canadian at random and ask, “What is your mother tongue?” Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region. What is the probability that a Canadian’s mother tongue is a language other than English or French?

• 0.15

• 0.85

• 0.06

• 0.28

Canada has two official languages, English and French. Choose a Canadian at random and ask, “What is your mother tongue?” Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region. What is the probability of English and French?

• 0.15

• 0.85

• 0.06

• 0.0

According to the National Center for Health Statistics, in December 2008, 78% of US households had a traditional landline telephone, 80% of households had cell phones, and 60% had both. Suppose we randomly selected a household in December 2008. Which of the following is the correct venn diagram?

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• 
• 
• 

According to the National Center for Health Statistics, in December 2008, 78% of US households had a traditional landline telephone, 80% of households had cell phones, and 60% had both. Suppose we randomly selected a household in December 2008. Find the probability that the household has at least one of the two types of phones.

• 0.60

• 1.0

• 0.98

• 0.02

• 0.80

According to the National Center for Health Statistics, in December 2008, 78% of US households had a traditional landline telephone, 80% of households had cell phones, and 60% had both. Suppose we randomly selected a household in December 2008. Find the probability the household has a cell phone only.

• 0.60

• 1.0

• 0.98

• 0.20

• 0.80

According to the National Center for Health Statistics, in December 2008, 78% of US households had a traditional landline telephone, 80% of households had cell phones, and 60% had both. Suppose we randomly selected a household in December 2008. Find the probability the household has neither type of phone.

• 0.02

• 0.20

• 0.98

• 0.60

• 0.80

A bag contains marbles: 18 red, 12 green, 15 blue, 12 white, and 7 black. A marble is chosen. Find P(red).

A bag contains marbles: 18 red, 12 green, 15 blue, 12 white, and 7 black. A marble is chosen. Find P(black U white).