40% of the children in a school have a dog, 35% have a cat, and 15% have a dog and a cat. A child is selected at random. What is the probability that he has a dog but not a cat?
Probability that he has a dog but not cat is 0.25
40% of the children in a school have a dog, 35% have a cat, and 15%...
Suppose that 32% of people have a dog, 27% of people have a cat, and 12% have both. a) What is the probability that someone owns a dog but not a cat? b) What is the probability that two independently selected people have cats? c) What is the probability that two independently selected people have a cat or dog but not both? d) What is the probability that someone owns neither a dog nor cat?
In a certain community, 35% of the families own a dog, and 20% of the families that own a dog also own a cat. It is also known that 32% of all the families own a cat. What is the probability that a randomly selected family owns a dog? What is the conditional probability that a randomly selected family doesn't own a dog given that it owns a cat?
Draw a Venn Diagram In a group of 37 children, 30 had a dog, 15 had a cat, and 11 had both a dog and a cat. How many children had only a dog? How many children had only a cat? How many children had neither a dog nor a cat as a pet?
t was found that 40% of people have a dog as a pet. If a random sample of 9 people is selected, what is the probability that 5 of them have a dog as a pet? (That is, what is P(X=5)?) (keep 4 decimal places)
2. In households with children, some of the school age children ate school lunches and others did not. Hence, we have another random phenomenon. Define a new random variable v as follows: O, if none of the children in household ate school lunch 1, if at least one child in household ate school lunch a. Table 20.8 contains data collected from a U.S. government survey on random variable v. Calculate the proportions for the outcomes of v and enter them...
3. In a certain community, 36% of all the families have a dog and 30% have a cat. Of those families with a dog, 22% also have a cat. Compute the probability that a randomly selected family (a) has both a dog and a cat; (b) has a dog GIVEN that it has a cat. Hint. Interpret 22% as conditional probability.
Suppose that 20% of people have a dog, 29% of people have a cat, and 13% own both. What is the probability that someone owns a dog or a cat?
Sixty percent of all children in a school do not have cavities. The probability, rounded to four decimal places, that in a random sample of 9 children selected from this school, at least 5 do not have cavities is:
you know what household owns cat what is probabiliy that also owns dog letter A represents cat ownership b dog ownership suppose 35 percent households in a pop 30 percent own dogs and 15 percent own both a cat and dog-suppose you know a household owns a cat what is probability they own a dog
What is the negation of "Chris has a cat or a dog"? O Chris doesn't have a pet O Chris has neither cat nor dog O Chris has a cat but not a dog, or Chris has a dog but not a cat O Chris doesn't have a cat, or Chris doesn't have a dog