Exam 6: 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} Define the random experiment of interest to the store.

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Question 181

Marital Status An insurance company has collected the following data on the gender and marital status of 570 customers. Suppose that a customer is selected at random. -{Marital Status Narrative} Develop the joint probability table.

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Question 182

There are situations where we witness a particular event and we need to compute the probability of one of its possible causes.____________________ is the technique we use to do this.

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Question 183

P(A|B) is the conditional probability of given .

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Question 184

If two events are mutually exclusive, their joint probability is ____________________.

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Question 185

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 neither contract?

(Short Answer)

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Question 186

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that at least one majors in accounting?

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Question 187

If P(A) = 0.4 and P(B) = 0.6, then A and B must be collectively exhaustive.

(True/False)

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Question 188

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} If the GPA of the student selected is over 3.0, what is the probability that the student is in the lower class?

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Question 189

Two events A and B are said to be independent if P(A|B) = P(B).

(True/False)

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Question 190

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that they all major in accounting?

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Question 191

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 at least one of the two contracts?

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Question 192

Bayes' Law can be used to calculate posterior probabilities, prior probabilities, as well as new conditional probabilities.

(True/False)

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Question 193

Mutual Fund Price An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks, based on past data. -{Mutual Fund Price Narrative} Interpret the 75% probability.

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Question 194

Two or more events are said to be independent when the occurrence of one event has no effect on the probability that another will occur.

(True/False)

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Question 195

If the events A and B are independent with P(A) = 0.35 and P(B) = 0.45, then the probability that both events will occur simultaneously is:

(Multiple Choice)

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Question 196

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} If the student selected is in the upper class, what is the probability that her GPA is between 2.0 and 3.0?

(Short Answer)

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Question 197

If P(A) = 0.35, P(B) = 0.45, and P(A and B) = 0.25, then P(A|B) is:

(Multiple Choice)

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Question 198

Financial Consultants A Financial Consultant has classified his clients according to their gender and the composition of their investment portfolio (primarily bonds, primarily stocks, or a balanced mix of bonds and stocks).The proportions of clients falling into the various categories are shown in the following table: One client is selected at random, and two events A and B are defined as follows: A: The client selected is male. B: The client selected has a balanced portfolio. -{Financial Consultants Narrative} Express each of the following events in words: a. A or B b. A and B

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Question 199

Suppose we have two events A and B.We can apply the addition rule to compute the probability that at least one of these events occurs.

(True/False)

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Question 200

Showing 181 - 200 of 234

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} Define the random experiment of interest to the store.

Marital Status An insurance company has collected the following data on the gender and marital status of 570 customers. Suppose that a customer is selected at random. -{Marital Status Narrative} Develop the joint probability table.

There are situations where we witness a particular event and we need to compute the probability of one of its possible causes.____________________ is the technique we use to do this.

P(A|B) is the conditional probability of given .

If two events are mutually exclusive, their joint probability is ____________________.

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that at least one majors in accounting?

If P(A) = 0.4 and P(B) = 0.6, then A and B must be collectively exhaustive.

Two events A and B are said to be independent if P(A|B) = P(B).

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that they all major in accounting?

Bayes' Law can be used to calculate posterior probabilities, prior probabilities, as well as new conditional probabilities.

Mutual Fund Price An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks, based on past data. -{Mutual Fund Price Narrative} Interpret the 75% probability.

Two or more events are said to be independent when the occurrence of one event has no effect on the probability that another will occur.

If the events A and B are independent with P(A) = 0.35 and P(B) = 0.45, then the probability that both events will occur simultaneously is:

If P(A) = 0.35, P(B) = 0.45, and P(A and B) = 0.25, then P(A|B) is:

Suppose we have two events A and B.We can apply the addition rule to compute the probability that at least one of these events occurs.

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

Filters

Exam 6: 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} Define the random experiment of interest to the store.

Marital Status An insurance company has collected the following data on the gender and marital status of 570 customers. Suppose that a customer is selected at random. -{Marital Status Narrative} Develop the joint probability table.

There are situations where we witness a particular event and we need to compute the probability of one of its possible causes.____________________ is the technique we use to do this.

P(A|B) is the conditional probability of ____________________ given ____________________.

If two events are mutually exclusive, their joint probability is ____________________.

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that at least one majors in accounting?

If P(A) = 0.4 and P(B) = 0.6, then A and B must be collectively exhaustive.

Two events A and B are said to be independent if P(A|B) = P(B).

Business Majors Suppose 30% of business majors major in accounting.You take a random sample of 3 business majors. -{Business Majors Narrative} What is the chance that they all major in accounting?

Bayes' Law can be used to calculate posterior probabilities, prior probabilities, as well as new conditional probabilities.

Mutual Fund Price An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks, based on past data. -{Mutual Fund Price Narrative} Interpret the 75% probability.

Two or more events are said to be independent when the occurrence of one event has no effect on the probability that another will occur.

If the events A and B are independent with P(A) = 0.35 and P(B) = 0.45, then the probability that both events will occur simultaneously is:

If P(A) = 0.35, P(B) = 0.45, and P(A and B) = 0.25, then P(A|B) is:

Suppose we have two events A and B.We can apply the addition rule to compute the probability that at least one of these events occurs.

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

Filters

P(A|B) is the conditional probability of given .