Explanation Given info: In a study it was found that during blizzards online sales are highly associated with the number of snow plows on the road. The director of the association of online merchants concludes that the number of plows has to be increased to increase the business in the snow time. Justification: Cause-and-effect: The cause-and-effect occurs between two groups if the one group makes the changes in another group. Causation: If one event is the result of the occurrence of other event then the variables of the two events are said to be under causation. In other words it can be said that there exist causal relationship between the two variables. The correlation between the two variables does not infer that the change in one variable is the cause of the change in other variables. Given that, there is a strong association between the variables number of snow plows and online sales. Here, the director states that “The number of snow plows causes online sales to be higher”. Given that, there is a strong correlation between the variables number of snow plows and online sales...

Intro STATS, Books a la Carte Plus New Mystatlab with Pearson Etext -- Access Card Package

4th Edition

ISBN: 9780321869852

Author: Richard D. De Veaux

Publisher: PEARSON

See similar textbooks

Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative p…

Videos

Question

Chapter 6, Problem 8E

To determine

Check whether the conclusion made by director is valid or not.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 6, Problem 7E

Chapter 6, Problem 9E

Chapter 6 Solutions

Intro STATS, Books a la Carte Plus New Mystatlab with Pearson Etext -- Access Card Package

Ch. 6.2 - Your statistics instructor tells you that the...Ch. 6.2 - Your statistics instructor tells you that the...Ch. 6.2 - Your statistics instructor tells you that the...Ch. 6.2 - Prob. 4JC Ch. 6.2 - Prob. 5JC Ch. 6 - Association Suppose you were to collect data for...Ch. 6 - Association II Suppose you were to collect data...Ch. 6 - Bookstore sales Consider the following data from a...Ch. 6 - Prob. 4E Ch. 6 - Prob. 5E

Ch. 6 - Correlation facts II If we assume that the...Ch. 6 - Prob. 7E Ch. 6 - Prob. 8E Ch. 6 - Prob. 9E Ch. 6 - Prob. 10E Ch. 6 - Association III Suppose you were to collect data...Ch. 6 - Prob. 12E Ch. 6 - Prob. 13E Ch. 6 - Prob. 14E Ch. 6 - Prob. 15E Ch. 6 - Prob. 16E Ch. 6 - Firing pottery A ceramics factory can fire eight...Ch. 6 - Coffee sales Owners of a new coffee shop tracked...Ch. 6 - Matching Here are several scatterplots. The...Ch. 6 - Matching II Here are several scatterplots. The...Ch. 6 - Prob. 21E Ch. 6 - Car thefts The National Insurance Crime Bureau...Ch. 6 - Prob. 23E Ch. 6 - Antidepressants A study compared the effectiveness...Ch. 6 - Streams and hard water In a study of streams in...Ch. 6 - Traffic headaches A study of traffic delays in 68...Ch. 6 - Cold nights Is there an association between time...Ch. 6 - Association V A researcher investigating the...Ch. 6 - Prob. 29E Ch. 6 - Prob. 30E Ch. 6 - Correlation errors Your Economics instructor...Ch. 6 - More correlation errors Students in the Economics...Ch. 6 - Height and reading A researcher studies children...Ch. 6 - Prob. 34E Ch. 6 - Correlation conclusions I The correlation between...Ch. 6 - Prob. 36E Ch. 6 - Prob. 37E Ch. 6 - Sample survey A polling organization is checking...Ch. 6 - Income and housing The Office of Federal Housing...Ch. 6 - Prob. 40E Ch. 6 - 41. Fuel economy 2010 Here are advertised...Ch. 6 - Drug abuse A survey was conducted in the United...Ch. 6 - Prob. 43E Ch. 6 - Burgers again In the previous exercise you...Ch. 6 - Prob. 45E Ch. 6 - 46. Second inning 2010 Perhaps fans are just more...Ch. 6 - Prob. 47E Ch. 6 - Prob. 48E Ch. 6 - Prob. 49E Ch. 6 - Vehicle weights The Minnesota Department of...Ch. 6 - Prob. 51E Ch. 6 - Prob. 52E

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.

Similar questions

Cholesterol Cholesterol in human blood is necessary, but too much can lead to health problems. There are three main types of cholesterol: HDL (high-density lipoproteins), LDL (low-density lipoproteins), and VLDL (very low-density lipoproteins). HDL is considered “good” cholesterol; LDL and VLDL are considered “bad” cholesterol. A standard fasting cholesterol blood test measures total cholesterol, HDL cholesterol, and triglycerides. These numbers are used to estimate LDL and VLDL, which are difficult to measure directly. Your doctor recommends that your combined LDL/VLDL cholesterol level be less than 130 milligrams per deciliter, your HDL cholesterol level be at least 60 milligrams per deciliter, and your total cholesterol level be no more than 200 milligrams per deciliter. (a) Write a system of linear inequalities for the recommended cholesterol levels. Let x represent the HDL cholesterol level, and let y represent the combined LDL VLDL cholesterol level. (b) Graph the system of inequalities from part (a). Label any vertices of the solution region. (c) Is the following set of cholesterol levels within the recommendations? Explain. LDL/VLDL: 120 milligrams per deciliter HDL: 90 milligrams per deciliter Total: 210 milligrams per deciliter (d) Give an example of cholesterol levels in which the LDL/VLDL cholesterol level is too high but the HDL cholesterol level is acceptable. (e) Another recommendation is that the ratio of total cholesterol to HDL cholesterol be less than 4 (that is, less than 4 to 1). Identify a point in the solution region from part (b) that meets this recommendation, and explain why it meets the recommendation.

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
College Algebra
Algebra
ISBN:9781337282291
Author:Ron Larson
Publisher:Cengage Learning

Glencoe Algebra 1, Student Edition, 9780079039897...

Algebra

ISBN:9780079039897

Author:Carter

Publisher:McGraw Hill

Big Ideas Math A Bridge To Success Algebra 1: Stu...

Algebra

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:Houghton Mifflin Harcourt

Holt Mcdougal Larson Pre-algebra: Student Edition...

Algebra

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

College Algebra

Algebra

ISBN:9781337282291

Author:Ron Larson

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Sampling Methods and Bias with Surveys: Crash Course Statistics #10; Author: CrashCourse;https://www.youtube.com/watch?v=Rf-fIpB4D50;License: Standard YouTube License, CC-BY

Statistics: Sampling Methods; Author: Mathispower4u;https://www.youtube.com/watch?v=s6ApdTvgvOs;License: Standard YouTube License, CC-BY

Check whether the conclusion made by director is valid or not.

Solution Summary: The author analyzes the correlation between the variables number of snow plows and online sales. The lurking variable is a type of extraneous variable.

Concept explainers

Videos

Check whether the conclusion made by director is valid or not.

Want to see the full answer?

Chapter 6 Solutions