Exam 13: From Randomness to Probability

The plastic arrow on a spinner for a child's game stops rotating to point at one of four colours that will determine what happens next.Determine whether the following probability assignment is legitimate. Probability of ...

(Multiple Choice)

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Question 61

An online poll asked people what their main source of news was: newspapers,television,internet,or radio? There were 882 responses.Here are the results: If we select a person at random from this sample of 917 people,what is the probability that the person responded "Newspapers"?

(Multiple Choice)

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Question 62

In a business class,25% of the students have never taken a statistics class,35% have taken only one semester of statistics,and the rest have taken two or more semesters of statistics.The professor randomly assigns students to groups of three to work on a project for the course.What is the probability that the first group mate you meet has studied some statistics?

(Multiple Choice)

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Question 63

In a business class,33% of the students have never taken a statistics class,42% have taken only one semester of statistics,and the rest have taken two or more semesters of statistics.The professor randomly assigns students to groups of three to work on a project for the course.What is the probability that the first group mate you meet has studied no more than one semester of statistics?

(Multiple Choice)

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Question 64

Showing 61 - 64 of 64

The plastic arrow on a spinner for a child's game stops rotating to point at one of four colours that will determine what happens next.Determine whether the following probability assignment is legitimate. Probability of ...

An online poll asked people what their main source of news was: newspapers,television,internet,or radio? There were 882 responses.Here are the results: If we select a person at random from this sample of 917 people,what is the probability that the person responded "Newspapers"?

Data

Displaying and Describing Categorical Data

Displaying and Summarizing Quantitative Data

Understanding and Comparing Distributions

The Standard Deviation As a Ruler and the Normal Model

Scatterplots, association, and Correlation

Linear Regression

Regression Wisdom

Re-Expressing Data: Get It Straight

Understanding Randomness

Sample Surveys

Experiments and Observational Surveys

Probability Rules

Random Variables

Probability Models

Sampling Distribution Models

Confidence Intervals for Proportions

Testing Hypotheses About Proportions

More About Tests

Comparing Two Proportions

Inferences About Means

Comparing Means

Paired Samples and Blocks

Comparing Counts

Inferences for Regression

Analysis of Variance

Multifactor Analysis of Variance

Multiple Regression

Multiple Regression Wisdom

Rank-Based Nonparametric Tests

The Bootstrap

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