ELEMENTARY STATS: STEP BY STEP - CONNECT
ELEMENTARY STATS: STEP BY STEP - CONNECT
10th Edition
ISBN: 9781265626181
Author: Bluman
Publisher: MCG
bartleby

Concept explainers

2-Proportion Test
In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.
bartleby

Videos

Textbook Question
Book Icon
Chapter 8.6, Problem 4E

Prison Time According to a public service website, 69.4% of white collar criminals get prison time. A randomly selected sample of 165 white collar criminals revealed that 120 were serving or had served prison time. Using α = 0.05, test the conjecture that the proportion of white collar criminals serving prison time differs from 69.4% in two different ways.

Expert Solution & Answer
Check Mark

Want to see the full answer?

Check out a sample textbook solution
Blurred answer
Previous
Chapter 8.6, Problem 3E
Next
Chapter 8.6, Problem 5E

Chapter 8 Solutions

ELEMENTARY STATS: STEP BY STEP - CONNECT

Ch. 8.1 - Applying the Concepts 81 Eggs and Your Health The...Ch. 8.1 - Define null and alternative hypotheses, and give...Ch. 8.1 - What is meant by a type I error? A type II error?...Ch. 8.1 - What is meant by a statistical test?Ch. 8.1 - Explain the difference between a one-tailed and a...Ch. 8.1 - What is meant by the critical region? The...Ch. 8.1 - What symbols are used to represent the null...Ch. 8.1 - What symbols are used to represent the...Ch. 8.1 - Explain what is meant by a significant difference.Ch. 8.1 - When should a one-tailed test be used? A...
Ch. 8.1 - In hypothesis testing, why cant the hypothesis be...Ch. 8.1 - Using the z table (Table E), find the critical...Ch. 8.1 - Using the z table (Table E), find the critical...Ch. 8.1 - For each conjecture, state the null and...Ch. 8.1 - For each conjecture, state the null and...Ch. 8.2 - Car Thefts You recently received a job with a...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - Reject or Not State whether the null hypothesis...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - For Exercises 1 through 25, perform each of the...Ch. 8.2 - Transmission Service A car dealer recommends that...Ch. 8.2 - Speeding Tickets A motorist claims that the South...Ch. 8.2 - Sick Days A manager states that in his factory,...Ch. 8.2 - Significance Levels Suppose a statistician chose...Ch. 8.2 - Hourly Wage The president of a company states that...Ch. 8.3 - How Much Nicotine Is in Those Cigarettes? A...Ch. 8.3 - In what ways is the t distribution similar to the...Ch. 8.3 - What are the degrees of freedom for the t test?Ch. 8.3 - Find the critical value (or values) for the t test...Ch. 8.3 - Find the critical value (or values) for the t test...Ch. 8.3 - Using Table F, find the P-value interval for each...Ch. 8.3 - Using Table F, find the P-value interval for each...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.3 - For Exercises 7 through 23, perform each of the...Ch. 8.4 - What were the statistical hypotheses? 2. What were...Ch. 8.4 - Give three examples of proportions.Ch. 8.4 - Why is a proportion considered a binomial...Ch. 8.4 - When you are testing hypotheses by using...Ch. 8.4 - What are the mean and the standard deviation of a...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - Youth Smoking Researchers suspect that 18% of all...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - For Exercises 5 through 20, perform each of the...Ch. 8.4 - When np or nq is not 5 or more, the binomial table...Ch. 8.4 - First-Class Airline Passengers In the past, 20% of...Ch. 8.4 - Show that Z=pppqn can be derived from z=Xu by...Ch. 8.5 - Testing Gas Mileage Claims Assume that you are...Ch. 8.5 - Using Table G, find the critical value(s) for...Ch. 8.5 - Using Table G, find the critical value(s) for...Ch. 8.5 - Using Table G, find the P-value interval for each...Ch. 8.5 - Using Table G, find the P-value interval for each...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - Tornado Deaths A researcher claims that the...Ch. 8.5 - Interstate Speeds It has been reported that the...Ch. 8.5 - Nicotine Content of Cigarettes A manufacturer of...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.5 - For Exercises 5 through 20, assume that the...Ch. 8.6 - First-Time Births According to the almanac, the...Ch. 8.6 - One-Way Airfares The average one-way airfare from...Ch. 8.6 - Prob. 3ECh. 8.6 - Prison Time According to a public service website,...Ch. 8.6 - Working at Home Workers with a formal arrangement...Ch. 8.6 - Newspaper Reading Times A survey taken several...Ch. 8.6 - Prob. 7ECh. 8.6 - How is the power of a test related to the type II...Ch. 8.6 - Prob. 9ECh. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - Prob. 8.4.12RECh. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 1 through 20, perform each of the...Ch. 8 - For Exercises 5 through 20, assume that the...Ch. 8 - For Exercises 5 through 20, assume that the...Ch. 8 - For Exercises 5 through 20, assume that the...Ch. 8 - For Exercises 5 through 20, assume that the...Ch. 8 - Plant Leaf Lengths A biologist knows that the...Ch. 8 - Tire Inflation To see whether people are keeping...Ch. 8 - The Data Bank is found in Appendix B, or on the...Ch. 8 - Select a random sample of 15 individuals and test...Ch. 8 - Select a random sample of at least 30 individuals,...Ch. 8 - Select a sample of 20 individuals and test the...Ch. 8 - Using the data from Data Set XIII, select a sample...Ch. 8 - Using the data obtained in Exercise 5, test the...Ch. 8 - Determine whether each statement is true or false....Ch. 8 - Determine whether each statement is true or false....Ch. 8 - Determine whether each statement is true or false....Ch. 8 - Determine whether each statement is true or false....Ch. 8 - Determine whether each statement is true or false....Ch. 8 - When the value of is increased, the probability...Ch. 8 - If you wish to test the claim that the mean of the...Ch. 8 - The degrees of freedom for the chi-square test for...Ch. 8 - For the t test, one uses _______ instead of . a. n...Ch. 8 - Complete the following statements with the best...Ch. 8 - Complete the following statements with the best...Ch. 8 - A conjecture about a population parameter is...Ch. 8 - Complete the following statements with the best...Ch. 8 - Complete the following statements with the best...Ch. 8 - For the following exercises where applicable: a....Ch. 8 - For Exercises 1 through 25, perform each of the...Ch. 8 - For Exercises 1 through 25, perform each of the...Ch. 8 - Prob. 18CQCh. 8 - Prob. 19CQCh. 8 - For Exercises 1 through 25, perform each of the...Ch. 8 - Prob. 21CQCh. 8 - Prob. 22CQCh. 8 - For the following exercises where applicable: a....Ch. 8 - For the following exercises where applicable: a....Ch. 8 - For the following exercises where applicable: a....Ch. 8 - Prob. 26CQCh. 8 - Prob. 27CQCh. 8 - Find the P-value for the z test in Exercise 16....Ch. 8 - Prob. 29CQCh. 8 - Prob. 30CQCh. 8 - For the following exercises where applicable: a....Ch. 8 - Strength of Wrapping Cord A manufacturer claims...Ch. 8 - Prob. 33CQCh. 8 - Find the 95% confidence interval for the mean in...Ch. 8 - Critical Thinking Challenges The power of a test...
Knowledge Booster
Background pattern image
Statistics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Text book image
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Text book image
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Text book image
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Text book image
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Text book image
College Algebra
Algebra
ISBN:9781938168383
Author:Jay Abramson
Publisher:OpenStax
SEE MORE TEXTBOOKS
Hypothesis Testing - Solving Problems With Proportions; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=76VruarGn2Q;License: Standard YouTube License, CC-BY
Hypothesis Testing and Confidence Intervals (FRM Part 1 – Book 2 – Chapter 5); Author: Analystprep;https://www.youtube.com/watch?v=vth3yZIUlGQ;License: Standard YouTube License, CC-BY