Chapter 5: Q. T5.2 (page 357)
What is the probability that the person owns a Chevy, given that the truck has four-wheel drive?
Short Answer
The correct option is :
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Chapter 5: Q. T5.2 (page 357)
What is the probability that the person owns a Chevy, given that the truck has four-wheel drive?
The correct option is :
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Cell phonesThe Pew Research Center asked a random sample of adult cell-phone owners from the United States their age and which type of cell phone they own: iPhone, Android, or other (including non-smartphones). The two-way table summarizes the data.

Suppose we select one of the survey respondents at random. What鈥檚 the probability that:
a. The person is not age to and does not own an iPhone?
b. The person is age to or owns an iPhone?
Checking independence Suppose A and B are two events such that, and. Are events A and B independent? Justify your answer.
Is this your card? A standard deck of playing cards (with jokers removed) consists of 52 cards in four suits鈥攃lubs, diamonds, hearts, and spades. Each suit has 13 cards, with denominations ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, and king. The jacks, queens, and kings are referred to as 鈥渇ace cards.鈥 Imagine that we shuffle the deck thoroughly and deal one card. The two-way table summarizes the sample space for this chance process based on whether or not the card is a face card and whether or not the card is a heart.
| Type of card | |||
| Face card | Non-Face card | Total | |
| Heart | |||
| Non-Heart | |||
| Total | |||
Are the events 鈥渉eart鈥 and 鈥渇ace card鈥 independent? Justify your answer.
The security system in a house has two units that set off an alarm when motion is
detected. Neither one is entirely reliable, but one or both always go off when there is
motion anywhere in the house. Suppose that for motion in a certain location, the
probability that detector A goes off and detector B does not go off is , and the
probability that detector A does not go off is . What is the probability that detector
B goes off?
Languages in Canada Canada has two official languages, English and French. Choose a Canadian at random and ask, 鈥淲hat is your mother tongue?鈥 Here is the distribution of responses, combining many separate languages from the broad Asia/Pacific region
a. Explain why this is a valid probability model.
b. What is the probability that the chosen person鈥檚 mother tongue is not English?
c. What is the probability that the chosen person鈥檚 mother tongue is one of Canada鈥檚 official languages?

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