Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 13, Problem 47P
Use the following information to answer the next five exercises. Two coworkers commute from the same building. They are interested in whether or not there is any variation in the time it takes them to drive to work. They each record their times for 20 commutes. The first worker’s times have a variance of 12.1. The second worker’s times have a variance of 16.9. The first worker thinks that he is more consistent with his commute times. Test the claim at the 10% level. Assume that commute times are
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Good explanation it sure experts solve it
Best explains it not need guidelines okk
Activ
Determine compass error using amplitude (Sun).
Minimum number of times that activity should be performed: 3 (1 each phase)
Sample calculation (Amplitude- Sun):
On 07th May 2006 at Sunset, a vessel in position 10°00'N 010°00'W observed the Sun bearing 288°
by compass. Find the compass error.
LMT Sunset:
LIT:
(+) 00d
07d 18h
00h
13m
40m
UTC Sunset:
07d
18h
53m
(added- since longitude is westerly)
Declination (07d 18h):
N 016° 55.5'
d (0.7):
(+)
00.6'
Declination Sun:
N 016° 56.1'
Sin Amplitude = Sin Declination/Cos Latitude
= Sin 016°56.1'/ Cos 10°00'
= 0.295780189
Amplitude=W17.2N
(The prefix of amplitude is named easterly if body is rising,
and westerly if body is setting. The suffix is named same
as declination)
True Bearing=287.2°
Compass Bearing= 288.0°
Compass Error = 0.8° West
Chapter 13 Solutions
Introductory Statistics
Ch. 13 - As part of an experiment to see how different...Ch. 13 - MRSA, or Staphylococcus aureus, can cause a...Ch. 13 - Four sports teams took a random sample of players...Ch. 13 - Another fourth grader also grew bean plants, but...Ch. 13 - The New York Choral Society divides male singers...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - One-Way ANOVA Use the following information to...Ch. 13 - One-Way ANOVA Use the following information to...Ch. 13 - One-Way ANOVA Use the following information to...
Ch. 13 - State the null hypothesis for a one-way ANOVA test...Ch. 13 - State the alternative hypothesis for a one-way...Ch. 13 - When do you use an ANOVA test?Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - 2 The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - What happens to the curves as the degrees of...Ch. 13 - What is the df(num)?Ch. 13 - What is the df(denom)?Ch. 13 - What are the Sum of Squares and Mean Squares...Ch. 13 - What are the Sum of Squares and Mean Squares...Ch. 13 - What is the F statistic?Ch. 13 - What is the p-value?Ch. 13 - At the 5% significance level, is there a...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Test of Two Variances Use the following...Ch. 13 - Test of Two Variances Use the following...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - What is the p-value?Ch. 13 - Is the claim accurate?Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - Three different traffic routes are tested for mean...Ch. 13 - Suppose a group is interested in determining...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - The F Distribution and the F-Ratio Use the...Ch. 13 - Three students, Linda, Tuan, and Javier, are given...Ch. 13 - A grassroots group opposed to a proposed increase...Ch. 13 - Use the following information to answer the next...Ch. 13 - Use the following information to answer the next...Ch. 13 - A researcher wants to know if the mean times (in...Ch. 13 - Are the means for the final exams the same for all...Ch. 13 - Are the mean number of times a month a person eats...Ch. 13 - Are the mean numbers of daily visitors to a ski...Ch. 13 - Sanjay made identical paper airplanes out of three...Ch. 13 - DDT is a pesticide that has been banned from use...Ch. 13 - The data shown is the recorded body temperatures...Ch. 13 - Three students, Linda, Tuan, and Javier, are given...Ch. 13 - A grassroots group opposed to a proposed increase...Ch. 13 - Which two magazine types do you think have the...Ch. 13 - Which two magazine types do you think have...Ch. 13 - Is the variance for the amount of money, in...Ch. 13 - Are the variances for incomes on the East Coast...Ch. 13 - Thirty men in college were taught a method of...Ch. 13 - King Manuel I, Komnenus ruled the Byzantine Empire...Ch. 13 - The American League and the National League of...
Additional Math Textbook Solutions
Find more solutions based on key concepts
In Exercises 1316, find y'(a) by applying the Product Rule and (b) by multiplying the factors to produce a sum ...
University Calculus: Early Transcendentals (4th Edition)
In hypothesis testing, the common level of significance is =0.05. Some might argue for a level of significance ...
Basic Business Statistics, Student Value Edition
TRY IT YOURSELF 1
Find the mean of the points scored by the 51 winning teams listed on page 39.
Elementary Statistics: Picturing the World (7th Edition)
IQ Scores. In Exercises 9–12, find the indicated IQ score and round to the nearest whole number. The graphs dep...
Elementary Statistics (13th Edition)
Time Employed A human resources manager for a large company takes a random sample of 50 employees from the comp...
Introductory Statistics
Repeated integration by parts Evaluate the following integrals. 24. e3xcos2xdx
Calculus: Early Transcendentals (2nd Edition)
Knowledge Booster
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
- Only sure experts solve it correct complete solutions okkarrow_forward13. In 2000, two organizations conducted surveys to ascertain the public's opinion on banning gay men from serving in leadership roles in the Boy Scouts.• A Pew poll asked respondents whether they agreed with "the recent decision by the Supreme Court" that "the Boy Scouts of America have a constitutional right to block gay men from becoming troop leaders."A Los Angeles Times poll asked respondents whether they agreed with the following statement: "A Boy Scout leader should be removed from his duties as a troop leader if he is found out to be gay, even if he is considered by the Scout organization to be a model Boy Scout leader."One of these polls found 36% agreement; the other found 56% agreement. Which of the following statements is true?A) The Pew poll found 36% agreement, and the Los Angeles Times poll found 56% agreement.B) The Pew poll includes a leading question, while the Los Angeles Times poll uses neutral wording.C) The Los Angeles Times Poll includes a leading question, while…arrow_forwardAnswer questions 2arrow_forward
- (c) Give an example where PLANBAC)= PCAPCBIPCC), but the sets are not pairwise independentarrow_forwardScrie trei multiplii comuni pentru numerele 12 și 1..arrow_forwardIntroduce yourself and describe a time when you used data in a personal or professional decision. This could be anything from analyzing sales data on the job to making an informed purchasing decision about a home or car. Describe to Susan how to take a sample of the student population that would not represent the population well. Describe to Susan how to take a sample of the student population that would represent the population well. Finally, describe the relationship of a sample to a population and classify your two samples as random, systematic, cluster, stratified, or convenience.arrow_forward
- 1.2.17. (!) Let G,, be the graph whose vertices are the permutations of (1,..., n}, with two permutations a₁, ..., a,, and b₁, ..., b, adjacent if they differ by interchanging a pair of adjacent entries (G3 shown below). Prove that G,, is connected. 132 123 213 312 321 231arrow_forwardYou are planning an experiment to determine the effect of the brand of gasoline and the weight of a car on gas mileage measured in miles per gallon. You will use a single test car, adding weights so that its total weight is 3000, 3500, or 4000 pounds. The car will drive on a test track at each weight using each of Amoco, Marathon, and Speedway gasoline. Which is the best way to organize the study? Start with 3000 pounds and Amoco and run the car on the test track. Then do 3500 and 4000 pounds. Change to Marathon and go through the three weights in order. Then change to Speedway and do the three weights in order once more. Start with 3000 pounds and Amoco and run the car on the test track. Then change to Marathon and then to Speedway without changing the weight. Then add weights to get 3500 pounds and go through the three gasolines in the same order.Then change to 4000 pounds and do the three gasolines in order again. Choose a gasoline at random, and run the car with this gasoline at…arrow_forwardAP1.2 A child is 40 inches tall, which places her at the 90th percentile of all children of similar age. The heights for children of this age form an approximately Normal distribution with a mean of 38 inches. Based on this information, what is the standard deviation of the heights of all children of this age? 0.20 inches (c) 0.65 inches (e) 1.56 inches 0.31 inches (d) 1.21 inchesarrow_forward
- AP1.1 You look at real estate ads for houses in Sarasota, Florida. Many houses range from $200,000 to $400,000 in price. The few houses on the water, however, have prices up to $15 million. Which of the following statements best describes the distribution of home prices in Sarasota? The distribution is most likely skewed to the left, and the mean is greater than the median. The distribution is most likely skewed to the left, and the mean is less than the median. The distribution is roughly symmetric with a few high outliers, and the mean is approximately equal to the median. The distribution is most likely skewed to the right, and the mean is greater than the median. The distribution is most likely skewed to the right, and the mean is less than the median.arrow_forwardDuring busy political seasons, many opinion polls are conducted. In apresidential race, how do you think the participants in polls are generally selected?Discuss any issues regarding simple random, stratified, systematic, cluster, andconvenience sampling in these polls. What about other types of polls, besides political?arrow_forwardPlease could you explain why 0.5 was added to each upper limpit of the intervals.Thanksarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher: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
Functions and Change: A Modeling Approach to Coll...
Algebra
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Cengage Learning
Correlation Vs Regression: Difference Between them with definition & Comparison Chart; Author: Key Differences;https://www.youtube.com/watch?v=Ou2QGSJVd0U;License: Standard YouTube License, CC-BY
Correlation and Regression: Concepts with Illustrative examples; Author: LEARN & APPLY : Lean and Six Sigma;https://www.youtube.com/watch?v=xTpHD5WLuoA;License: Standard YouTube License, CC-BY