QUESTION 24 Please put your answer in fraction form, fully reduced. In a recent

Question

QUESTION 24

Please put your answer in fraction form, fully reduced.

In a recent study, the following data were obtained in response to the question, "Do you favor the proposal of the school's combining the elementary and middle school students in one building?"

If a person is selected at random, what is the probability the person is a male or is against the issue.

QUESTION 25

Please put your answer in fraction form, fully reduced. Ex. 5/6

In a recent study, the following data were obtained in response to the question, "Do you favor the proposal of the school's combining the elementary and middle school students in one building?"

If a person is selected at random, what is the probability that the person is a female or favors the issue.

QUESTION 26

Please put your answer in decimal form using three decimal places.
See text for table.

If a driver is chosen at random, find the probability that the driver is age 20 or female

QUESTION 27

Please put your answer in decimal form using three decimal places. Ex. .957

See text for table.

If a driver is selected at random find the probability that the driver is at least 20 years old.

QUESTION 28

What is the difference between independent and dependent events? Give an example of each.

QUESTION 29

Prison Populations. If 25% of U.S. federal prison inmates are not U.S. citizens, find the probability that 2 randomly selected federal prison inmates will not be U.S. citizens.

Please put your answer in percent form, round to one decimal digits,

QUESTION 30

A flashlight has six batteries, two of which are defective. If two are selected at random without replacement, find the probability that both are defective.

Please put your answer in reduced fraction form,

QUESTION 31

In a scientific study there are eight guinea pigs, five of which are pregnant. If three are selected at random without replacement, find the probability that all are pregnant.

Please put your answer in reduced fraction form

QUESTION 32

At the Avonlea Country Club, .73 of the members play bridge and swim, and .82 play bridge. If a member is selected at random, find the probability that the member swims, given that the member plays bridge.

Please put your answer in decimal form, round to two places

QUESTION 33

At a local university 54.3% (.543) of incoming freshman have computers. If 3 students are selected at random, find the following probability:

None have computers.

Please put your answer in decimal form using three decimal places.

QUESTION 34

At a local university 54.3% (.543) of incoming freshman have computers. If 3 students are selected at random, find the following probability:

At least one has a computer.

Please put your answer in decimal form using three decimal places.

QUESTION 35

Congressional Terms. Below is given the summary from the 112th Congress of Senators whose terms end in the indicated year.

If a Senator is selected at random, find this probability:

P(Democrat and term expires in 2015)

Please put your answer in decimal form,

QUESTION 36

Congressional Terms. Below is given the summary from the 112th Congress of Senators whose terms end in the indicated years.

If a Senator is selected at random, find this probability:

P(Republican given term expires in 2017)

Please put your answer in decimal form,

QUESTION 37

There are five chemistry instructors and six physics instructors at a college. If a committee of four instructors is selected, find the probability of at least one of them being a physics instructor.

Please answer in reduced fraction form,

QUESTION 38

A carpool contains three kindergartners and five first-graders. If two children are ill, find the probability that at least one of them is a kindergartner.

Please answer in reduced fraction form,

Gender Yes No No Opinion Males 72 81 5 Females 103 68 7

Explanation / Answer

Q-24

P(male or against issue)= (72+81+5+81+68-81)/336=0.6726

Q-25

P(female or favor)=(103+68+7+72+103-103)/336=0.7441

Q-26

P(age 20 or female)=(1625+1553+4517+1553+1627-1553)/ 15747=0.5920

Q-27

P(at least 20 age)=(1625+1553+1679+1627)/15747=0.4118

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