If an experiment consists of five outcomes with P(O1) = 0.10, P(O2) = 0.20, P(O3) = 0.30, P(O4) = 0.25, then P(O5) is

A) 0.75 B) 0.15 C) 0.50 D) Cannot be determined from the information given. A) 0.75 B) 0.15 C) 0.50 D) Cannot be determined from the information given.

Exam 6: Probability

Construction Bids A construction company has submitted bids on two separate state contracts, A and B.The company feels that it has a 60% chance of winning contract A, and a 50% chance of winning contract B.Furthermore, the company believes that it has an 80% chance of winning contract A if it wins contract B. -{Construction Bids Narrative} What is the probability that the company will win both contracts?

(Essay)

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Question 21

Two events A and B are independent if P(A and B) = 0.

(True/False)

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Question 22

The ____________________ rule is used to calculate the joint probability of two events.

(Short Answer)

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Question 23

Suppose A and B are two independent events for which P(A) = 0.20 and P(B) = 0.60. a. Find P(A|B). b. Find P(B|A).

(Short Answer)

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Question 24

Drunk Drivers Six hundred accidents that occurred on a Saturday night were analyzed.Two items noted were the number of vehicles involved and whether alcohol played a role in the accident.The numbers are shown below: -{Drunk Drivers Narrative} If alcohol was not involved, what proportion of the accidents were multiple vehicle?

(Short Answer)

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Question 25

If P(A) = 0.65, P(B) = 0.58, and P(A and B) = 0.76, then P(A or B) is:

(Multiple Choice)

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(75)

Question 26

Construction Bids A construction company has submitted bids on two separate state contracts, A and B.The company feels that it has a 60% chance of winning contract A, and a 50% chance of winning contract B.Furthermore, the company believes that it has an 80% chance of winning contract A if it wins contract B. -{Construction Bids Narrative} If the company wins contract B, what is the probability that it will not win contract A?

(Essay)

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Question 27

If an experiment consists of five outcomes with P(O₁) = 0.10, P(O₂) = 0.20, P(O₃) = 0.30, P(O₄) = 0.25, then P(O₅) is

(Multiple Choice)

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Question 28

Posterior probabilities can be calculated using the addition rule for mutually exclusive events.

(True/False)

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Question 29

Which of the following statements is false?

(Multiple Choice)

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Question 30

If A and B are independent events with P(A) = 0.60 and P(B) = 0.70, then P(A or B) equals:

(Multiple Choice)

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Question 31

Two events A and B are said to be mutually exclusive if P(A and B) = 1.0.

(True/False)

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Question 32

Certification Test A standard certification test was given at three locations.1,000 candidates took the test at location A, 600 candidates at location B, and 400 candidates at location C.The percentages of candidates from locations A, B, and C who passed the test were 70%, 68%, and 77%, respectively.One candidate is selected at random from among those who took the test. -{Certification Test Narrative} What is the probability that the selected candidate passed the test?

(Short Answer)

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(74)

Question 33

GPA and Class A college professor classifies his students according to their grade point average (GPA) and their class rank.GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores) and the upper class (juniors and seniors).One student is selected at random. -{GPA and Class Narrative} What is the probability that the student has GPA over 3.0?

(Short Answer)

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Question 34

Bayes' Law says that P(A|B) = P(B|A)P(A).

(True/False)

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Question 35

Cars Suppose X = the number of cars owned by a family in the U.S.The probability distribution of X is shown in the table below. -{Cars Narrative} Suppose you choose two families at random.What is the chance that they each own one car? (That means family A owns a car and family B owns a car.)

(Multiple Choice)

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Question 36

In the scenario of Bayes' Law, P(A|B) is a posterior probability, while P(B|A) is a(n) ____________________ probability.

(Short Answer)

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Question 37

GPA and Class A college professor classifies his students according to their grade point average (GPA) and their class rank.GPA is on a 0.0-4.0 scale, and class rank is defined as the under class (freshmen and sophomores) and the upper class (juniors and seniors).One student is selected at random. -{GPA and Class Narrative} Are being in the upper class and having a GPA over 3.0 related? Explain.

(Essay)

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Question 38

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. -{Hobby Shop Sales Narrative} List the outcomes in the sample space.

(Short Answer)

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Question 39

If either event A or event B must occur, then A and B are mutually exclusive and collectively exhaustive events.

(True/False)

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Question 40

Showing 21 - 40 of 234

Two events A and B are independent if P(A and B) = 0.

The ____________________ rule is used to calculate the joint probability of two events.

Suppose A and B are two independent events for which P(A) = 0.20 and P(B) = 0.60. a. Find P(A|B). b. Find P(B|A).

If P(A) = 0.65, P(B) = 0.58, and P(A and B) = 0.76, then P(A or B) is:

If an experiment consists of five outcomes with P(O₁) = 0.10, P(O₂) = 0.20, P(O₃) = 0.30, P(O₄) = 0.25, then P(O₅) is

Posterior probabilities can be calculated using the addition rule for mutually exclusive events.

Which of the following statements is false?

If A and B are independent events with P(A) = 0.60 and P(B) = 0.70, then P(A or B) equals:

Two events A and B are said to be mutually exclusive if P(A and B) = 1.0.

Bayes' Law says that P(A|B) = P(B|A)P(A).

Cars Suppose X = the number of cars owned by a family in the U.S.The probability distribution of X is shown in the table below. -{Cars Narrative} Suppose you choose two families at random.What is the chance that they each own one car? (That means family A owns a car and family B owns a car.)

In the scenario of Bayes' Law, P(A|B) is a posterior probability, while P(B|A) is a(n) ____________________ probability.

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. -{Hobby Shop Sales Narrative} List the outcomes in the sample space.

If either event A or event B must occur, then A and B are mutually exclusive and collectively exhaustive events.

What Is Statistics

Graphical Descriptive Techniques I

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

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