Chapter 5: Q. 106. (page 337)
If P(A) = 0.24, P(B) = 0.52, and A and B are independent events, what is P(A or B)?
a.
b.
c.
d.
e. The answer cannot be determined from the information given.
Short Answer
The required answer is
The correct option is
Chapter 5: Q. 106. (page 337)
If P(A) = 0.24, P(B) = 0.52, and A and B are independent events, what is P(A or B)?
a.
b.
c.
d.
e. The answer cannot be determined from the information given.
The required answer is
The correct option is
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Get started for freeCell phones The 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.
Rock smashes scissors Almost everyone has played the game rock-paper-scissors at some point. Two players face each other and, at the count of , make a fist (rock), an extended hand, palm side down (paper), or a “V” with the index and middle fingers (scissors). The winner is determined by these rules: rock smashes scissors; paper covers rock; and scissors cut paper. If both players choose the same object, then the game is a tie. Suppose that Player and Player are both equally likely to choose rock, paper, or scissors. a. Give a probability model for this chance process. b. Find the probability that Player wins the game on the first throw .
Lucky penny? Harris Interactive reported that of U.S. adults believe that
finding and picking up a penny is good luck. Assuming that responses from different
individuals are independent, what is the probability of randomly selecting U.S. adults
and finding at least person who believes that finding and picking up a penny is good
luck?
2Drive to exercise : The two-way table summarizes the responses of 120 people to a survey in which they were asked, “Do you exercise for at least 30 minutes four or more times per week?” and “What kind of vehicle do you drive?”
Exercise | Sedan | SUV | Truck |
Yes | |||
No |
Suppose one person from this sample is randomly selected.
a. Find the probability that the person drives an SUV.
b. Find the probability that the person drives a sedan or exercises for at least 30 minutes four or more times per week.
c. Find the probability that the person does not drive a truck, given that she or he exercises for at least 30 minutes four or more times per week.
Dogs and cats In one large city, 40% of all households own a dog, 32% own a cat, and 18% own both. Suppose we randomly select a household.
a. Make a Venn diagram to display the outcomes of this chance process using events D: owns a dog, and C: owns a cat.
b. Find P.
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