Elementary Statistics: A Step By Step Approach

9th Edition

ISBN: 9780073534985

Author: Allan Bluman

Publisher: McGraw-Hill Science/Engineering/Math

See similar textbooks

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.

Videos

Textbook Question

Chapter 13.2, Problem 1AC

Clean Air

An environmentalist suggests that the median of the number of days per month that a large city failed to meet the EPA acceptable standards for clean air is 11 days per month. A random sample of 20 months shows the number of days per month that the air quality was below the EPA’s standards.

Chapter 13.2, Problem 1AC, Clean Air An environmentalist suggests that the median of the number of days per month that a large

1. What is the claim?

2. What test would you use to test the claim? Why?

3. State the hypotheses.

4. Select a value for α and find the corresponding critical value.

5. What is the test value?

6. What is your decision?

7. Summarize the results.

8. Could a parametric test be used?

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 13.1, Problem 12E

Chapter 13.2, Problem 1E

Chapter 13 Solutions

Elementary Statistics: A Step By Step Approach

Ch. 13.1 - The following table lists the percentages of...Ch. 13.1 - Exercises 131 1. What is meant by nonparametric...Ch. 13.1 - When should nonparametric statistics be used?Ch. 13.1 - Prob. 3E Ch. 13.1 - List the disadvantages of nonparametric...Ch. 13.1 - Prob. 5E Ch. 13.1 - Explain what is meant by the efficiency of a...Ch. 13.1 - Prob. 7E Ch. 13.1 - Prob. 8E Ch. 13.1 - Prob. 9E

Ch. 13.1 - Prob. 10E Ch. 13.1 - Prob. 11E Ch. 13.1 - Prob. 12E Ch. 13.2 - Clean Air An environmentalist suggests that the...Ch. 13.2 - Exercises 132 1. Why is the sign test the simplest...Ch. 13.2 - Prob. 2E Ch. 13.2 - Prob. 3E Ch. 13.2 - Prob. 4E Ch. 13.2 - For Exercises 5 through 20, perform these steps....Ch. 13.2 - Prob. 6E Ch. 13.2 - AID: 1825 | 12/01/2018 7. Annual Incomes for Men...Ch. 13.2 - Weekly Earnings of Women According to the Womens...Ch. 13.2 - Prob. 9E Ch. 13.2 - Prob. 10E Ch. 13.2 - Prob. 11E Ch. 13.2 - Deaths due to Severe Weather A meteorologist...Ch. 13.2 - Prob. 13E Ch. 13.2 - Television Viewers A researcher read that the...Ch. 13.2 - Prob. 15E Ch. 13.2 - Exam Scores A statistics professor wants to...Ch. 13.2 - Prob. 17E Ch. 13.2 - Effects of a Pill on Appetite A researcher wishes...Ch. 13.2 - Prob. 19E Ch. 13.2 - Routine Maintenance and Defective Parts A...Ch. 13.2 - Prob. 21EC Ch. 13.2 - Prob. 22EC Ch. 13.2 - Prob. 23EC Ch. 13.2 - 1, 8, 2, 6, 10, 15, 24, 33, 56, 41, 58, 54, 5, 3,...Ch. 13.2 - Prob. 25EC Ch. 13.3 - School Lunch A nutritionist decided to see if...Ch. 13.3 - Prob. 1E Ch. 13.3 - What is the parametric equivalent test for the...Ch. 13.3 - Prob. 3E Ch. 13.3 - Lengths of Prison Sentences A random sample of men...Ch. 13.3 - Prob. 5E Ch. 13.3 - Lifetimes of Handheld Video Games To test the...Ch. 13.3 - Prob. 7E Ch. 13.3 - Winning Baseball Games For the years 19701993 the...Ch. 13.3 - Prob. 9E Ch. 13.3 - Medical School Enrollments Random samples of...Ch. 13.3 - Prob. 11E Ch. 13.3 - Student Participation in a Blood Drive Students in...Ch. 13.4 - Pain Medication A researcher decides to see how...Ch. 13.4 - Prob. 1E Ch. 13.4 - Prob. 2E Ch. 13.4 - Prob. 3E Ch. 13.4 - Prob. 4E Ch. 13.4 - Prob. 5E Ch. 13.4 - Prob. 6E Ch. 13.4 - Prob. 7E Ch. 13.4 - Prob. 8E Ch. 13.4 - Prob. 9E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 11E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 13E Ch. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.5 - Prob. 1AC Ch. 13.5 - Prob. 1E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 3E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 5E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 7E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 9E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 11E Ch. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.6 - Tall Trees As a biologist, you wish to see if...Ch. 13.6 - Prob. 1E Ch. 13.6 - Prob. 2E Ch. 13.6 - Prob. 3E Ch. 13.6 - Prob. 4E Ch. 13.6 - Prob. 5E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 7E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 9E Ch. 13.6 - Prob. 10E Ch. 13.6 - Prob. 11E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 13E Ch. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 15E Ch. 13.6 - Daily Lottery Numbers Listed below are the daily...Ch. 13.6 - Prob. 17E Ch. 13.6 - Random Numbers Random? A calculator generated...Ch. 13.6 - Prob. 19E Ch. 13.6 - Gender of Shoppers Twenty shoppers are in a...Ch. 13.6 - Employee Absences A supervisor records the number...Ch. 13.6 - Skiing Conditions A ski lodge manager observes the...Ch. 13.6 - Prob. 23E Ch. 13.6 - Prob. 24E Ch. 13.6 - Prob. 25E Ch. 13.6 - Speeding Tickets A police chief records the gender...Ch. 13.6 - Prob. 27E Ch. 13.6 - Prob. 28E Ch. 13.6 - Prob. 29EC Ch. 13.6 - Prob. 30EC Ch. 13.6 - Prob. 31EC Ch. 13.6 - Prob. 32EC Ch. 13.6 - Prob. 33EC Ch. 13 - For Exercises 1 through 13, follow this procedure:...Ch. 13 - Prob. 13.2.2RE Ch. 13 - Prob. 13.2.3RE Ch. 13 - Record High Temperatures Shown here are the record...Ch. 13 - Hours Worked by Student Employees Student...Ch. 13 - Prob. 13.4.6RE Ch. 13 - Prob. 13.4.7RE Ch. 13 - Prob. 13.5.8RE Ch. 13 - Prob. 13.5.9RE Ch. 13 - Prob. 13.6.10RE Ch. 13 - Prob. 13.6.11RE Ch. 13 - Prob. 13.6.12RE Ch. 13 - Prob. 13.6.13RE Ch. 13 - Prob. 13.6.14RE Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 2CQ Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 5CQ Ch. 13 - Prob. 6CQ Ch. 13 - Prob. 7CQ Ch. 13 - Prob. 8CQ Ch. 13 - Prob. 9CQ Ch. 13 - Prob. 10CQ Ch. 13 - Prob. 11CQ Ch. 13 - Complete the following statements with the best...Ch. 13 - Prob. 13CQ Ch. 13 - Prob. 14CQ Ch. 13 - Prob. 15CQ Ch. 13 - Prob. 16CQ Ch. 13 - Textbook Costs Samples of students majoring in law...Ch. 13 - Prob. 18CQ Ch. 13 - Prob. 19CQ Ch. 13 - Prob. 20CQ Ch. 13 - Prob. 21CQ Ch. 13 - Prob. 22CQ Ch. 13 - Prob. 23CQ Ch. 13 - Prob. 24CQ Ch. 13 - Prob. 25CQ Ch. 13 - Prob. 26CQ Ch. 13 - Prob. 1DA Ch. 13 - Prob. 2DA Ch. 13 - Prob. 3DA Ch. 13 - Prob. 2CTC

Additional Math Textbook Solutions

Find more solutions based on key concepts

Empirical versus Theoretical A Monopoly player claims that the probability of getting a 4 when rolling a six-si...

Introductory Statistics

1. How is a sample related to a population?

Elementary Statistics: Picturing the World (7th Edition)

147. Draining a tank Water drains from the conical tank shown in the accompanying figure at the rate . a. What...

University Calculus

(a) Make a stem-and-leaf plot for these 24 observations on the number of customers who used a down-town CitiBan...

APPLIED STAT.IN BUS.+ECONOMICS

Find E(X) for each of the distributions given in Exercise 2.1-3.

Probability And Statistical Inference (10th Edition)

Find all solutions of each equation in the interval .

Precalculus: A Unit Circle Approach (3rd Edition)

Knowledge Booster

$Statistics$

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.

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill

Glencoe Algebra 1, Student Edition, 9780079039897...

Algebra

ISBN:9780079039897

Author:Carter

Publisher:McGraw Hill

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

Solution Summary: The author states that the hypothesis tests the median of the number of days per month that a large city failed to meet the EPA acceptable standards for clean air.

Concept explainers

Videos

Want to see the full answer?

Chapter 13 Solutions

Additional Math Textbook Solutions