EBK THE BASIC PRACTICE OF STATISTICS
EBK THE BASIC PRACTICE OF STATISTICS
8th Edition
ISBN: 8220106747841
Author: Moore
Publisher: YUZU
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 1, Problem 1.40E

a.

To determine

To explain: The reason for using rates for comparison instead of counts for the number of accidents occurred due to marijuana use.

a.

Expert Solution
Check Mark

Answer to Problem 1.40E

The rates can give the accident rate caused by drivers across various categories of marijuana use.

Explanation of Solution

Given info:

A survey was conducted for 907 drivers who aged 21. The survey states that whether the drivers had made accidents and they were asked about marijuana use. The dataset is tabulated into various categories of marijuana use.

Justification:

By converting the number of accidents caused into rates can give the accidents rate for different categories of marijuana use. It would be easy for comparing and making decisions.

b.

To determine

To compute: The accident rates across four categories of marijuana use.

To construct: The graph for the accident rates across four categories of marijuana use.

To conclude: The causes and effects of marijuana on drivers.

b.

Expert Solution
Check Mark

Answer to Problem 1.40E

The accident rate across four categories of marijuana use is given as:

Category Accident rate
Never 13.1
1-10 15.7
11-50 21.4
51+ 32.1

Output using the MINITAB software is given below:

EBK THE BASIC PRACTICE OF STATISTICS, Chapter 1, Problem 1.40E

The usage of marijuana has possible effects on the number of accidents made by drivers.

Explanation of Solution

Calculation:

Accident rate for “Never” category is calculated as

(Accident rate caused by Never category)=(Accidents caused by drivers under Never categoryTotal number of drivers under Never category)(100)=(59452)(100)=13.1

Thus, the accident rate for the “Never” category is 13.1%

Accident rate for “1-10 times” category is calculated as

(Accident rate caused by 1-10 times category)=((Accidents caused by driversunder 1-10 times category)(Total number of driversunder 1-10 times category))(100)=(36229)(100)=15.7 Thus, the accident rate for “1-10 times” category is 15.7%

Accident rate for “11-50 times” category is calculated as

(Accident rate caused by 1150 times category)=((Accidents caused by drivers under 1150 times category)(Total number of driversunder 1150 times category))(100)=(1570)(100)=21.4

Thus, the accident rate for “11-50 times” category is 15.7%

Accident rate for “51+ times” category is calculated as

(Accident rate caused by 51+times category)=((Accidents caused by driversunder 51+times category)(Total number of driversunder 51+times category))(100)=(50156)(100)=32.1

Thus, the accident rate for “51+ times” category is 32.1%

Software procedure:

Step by step procedure to construct the Bar Chart using the MINITAB software:

  • Choose Graph > Bar Chart.
  • From Bars represent, choose Values from a table.
  • Under One column of values, choose Simple. Click OK.
  • In Graph variables, enter the column of Accident rate.
  • In Categorical variable, enter the column of Category.
  • Click OK.

Interpretation:

The bar graph is constructed for the accident rate across four categories of marijuana use.

The horizontal axis represents the categories and vertical axis represents the accident rate.

Also, the bar corresponding to the category 51+ times has the maximum number of accidents.

Justification:

The bar graph shows that there is a possibility of accidents because the accident rate is more when the usage of marijuana is high.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
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.
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Text book image
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Text book image
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
Text book image
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Text book image
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman
Continuous Probability Distributions - Basic Introduction; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=QxqxdQ_g2uw;License: Standard YouTube License, CC-BY
Probability Density Function (p.d.f.) Finding k (Part 1) | ExamSolutions; Author: ExamSolutions;https://www.youtube.com/watch?v=RsuS2ehsTDM;License: Standard YouTube License, CC-BY
Find the value of k so that the Function is a Probability Density Function; Author: The Math Sorcerer;https://www.youtube.com/watch?v=QqoCZWrVnbA;License: Standard Youtube License