ELEMENTARY STATISTICS(LL)(FD)
3rd Edition
ISBN: 9781260707458
Author: Navidi
Publisher: MCGRAW-HILL CUSTOM PUBLISHING
expand_more
expand_more
format_list_bulleted
Question
Chapter 12, Problem 14RE
To determine
To find:Whether each of the numbers is equally likely to come up.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
In the 2014-2015 academic year, many public universities in the United States raised
tuition and fees due to a decrease in state subsidies. The change in the cost of
tuition, a shared dormitory room, and the most popular meal plan from the 2014-
2015 academic year for a sample of 10 public universities were as follows: $1589,
$593, $1223, $869, $423, $1720, $708, $1425, $922 and $308. Run the descriptive
statistic measures for this data set and interpret the results for the following
concepts:
At an assembly plant, workers assemble parts for a piece of farm equipment. The supervisor conducted an experiment to compare the effectiveness of three assembly methods, A, B, and C. Eighteen employees were randomly assigned, six employees each, to one of the
three methods. After completing their training, each person was asked to assemble five pieces of equipment using his or her training method. The average time to complete the assembly of all five pieces of equipment was recorded.
(a) What type of study design is used?
O independent groups design
O repeated measures design
O matched pairs design
O randomized block design
What are the experimental units in this study?
O the 18 employees
O the five pieces of equipment to be assembled
O the three assembly methods
O the average time to assemble five pieces of equipment
(b) What are the treatments?
O the 18 employees
O the five pieces of equipment to be assembled
O the three assembly methods
the average time to assemble five pieces of…
In a US presidential election, the incumbent president wins with 51.5% of the vote to 48.2% for the primary
challenger (and .3% to others). In a nationwide telephone poll of 1000 people conducted exactly one week
before the election by a university polling group, 49% of people polled supported the incumbent president,
50% supported the challenger, and 1% supported other candidates.
a. For the polling study, what was the population of interest?
b. What was the sample?
c. Why did the sample results differ from the population?
d. What are two constants that might have limited the generalizability of the polling results?
Chapter 12 Solutions
ELEMENTARY STATISTICS(LL)(FD)
Ch. 12.1 - In Exercises 9 and 10, fill in each blank with the...Ch. 12.1 - Prob. 10ECh. 12.1 - In Exercises 11 and 12, determine whether the...Ch. 12.1 - Prob. 12ECh. 12.1 - Find the =0.05 critical value for the chi-square...Ch. 12.1 - Find the =0.01 critical value for the chi-square...Ch. 12.1 - Find the area to the right of 24.725 under the...Ch. 12.1 - Find the area to the right of 40.256 under the...Ch. 12.1 - For the following observed and expected...Ch. 12.1 - For the following observed and expected...
Ch. 12.1 - Following are observed frequencies. The null...Ch. 12.1 - Following are observed frequencies. The null...Ch. 12.1 - Is the lottery fair? Mega Millions is a multistate...Ch. 12.1 - Grade distribution: A statistics teacher claims...Ch. 12.1 - False alarm: The numbers of false fire alarms were...Ch. 12.1 - Crime rates: The FBI computed the proportion of...Ch. 12.1 - Prob. 25ECh. 12.1 - Prob. 26ECh. 12.1 - Economic future: A Heartland Monitor poll taken in...Ch. 12.1 - Prob. 28ECh. 12.1 - Fair die? A gambler rolls a die 600 times to...Ch. 12.2 - In Exercises 3-5, fill in each blank with the...Ch. 12.2 - Prob. 4ECh. 12.2 - Prob. 5ECh. 12.2 - Prob. 6ECh. 12.2 - Prob. 7ECh. 12.2 - In Exercises 6-8, determine whether the statement...Ch. 12.2 - For the given table of observed frequencies:...Ch. 12.2 - For the given table of observed frequencies:...Ch. 12.2 - Carbon monoxide: A recent study examined the...Ch. 12.2 - Beryllium disease: Beryllium is an extremely...Ch. 12.2 - No smoking: The General Social Survey conducted a...Ch. 12.2 - How big is your family? The General Social Survey...Ch. 12.2 - Age discrimination: The following table presents...Ch. 12.2 - Schools and museums: Do people who are interested...Ch. 12.2 - Prob. 17ECh. 12.2 - Prob. 18ECh. 12.2 - Prob. 19ECh. 12.2 - Are you an optimist? The General Social Survey...Ch. 12 - A contingency table containing observed values has...Ch. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 4CQCh. 12 - Prob. 5CQCh. 12 - Prob. 6CQCh. 12 - Exercises 4-9 refer to the following data:...Ch. 12 - Prob. 8CQCh. 12 - Exercises refer to the following data: Electric...Ch. 12 - Prob. 10CQCh. 12 - Exercises 10-15 refer to the following data:...Ch. 12 - Prob. 12CQCh. 12 - Prob. 13CQCh. 12 - Prob. 14CQCh. 12 - Prob. 15CQCh. 12 - Prob. 1RECh. 12 - Prob. 2RECh. 12 - Prob. 3RECh. 12 - Prob. 4RECh. 12 - Prob. 5RECh. 12 - Prob. 6RECh. 12 - Prob. 7RECh. 12 - Prob. 8RECh. 12 - Prob. 9RECh. 12 - Prob. 10RECh. 12 - Prob. 11RECh. 12 - Prob. 12RECh. 12 - Prob. 13RECh. 12 - Prob. 14RECh. 12 - Prob. 15RECh. 12 - Prob. 1WAICh. 12 - Prob. 2WAICh. 12 - Prob. 3WAICh. 12 - Prob. 4WAICh. 12 - Prob. 1CSCh. 12 - Prob. 2CSCh. 12 - Prob. 3CSCh. 12 - Prob. 4CSCh. 12 - Prob. 5CSCh. 12 - Prob. 6CSCh. 12 - Prob. 7CSCh. 12 - We conclude that department is associated with...
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
- Answer the following questions. 3. When given two separate events, how do we know whether to apply the Addition Principle or the Multiplication Principle when calculating possible outcomes? What conjunctions may help to determine which operations to use?arrow_forwardIn a survey of 782 human resource professionals, each was asked about the importance of the appearance of a job applicant. The survey subjects were randomly selected by Harry Interactive pollsters.arrow_forwardExhibit 12-4 In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the stude were in the Education College. To see whether the proportions have changed, a random sample of 300 students from ABC University was selected. Ninety the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College. Refer to Exhibit 12-4. The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals O a. 1.645 Ob. 19.6 O c.5.99 O d. 7.80arrow_forward
- Use the given information to answer question 4 and its subparts: Step 1, Step 2, Step 3, and Step 4arrow_forwardIn a simple study about coffee habit in two towns, the following information was received: Town A: Females were 40%; Total coffee drinkers were 45% and male non-coffee drinkers were 20%. Town B: Males were 55%, male non-coffee drinkers were 30% and female coffee drinkers were 15%. Represent the above data in a tabular form.arrow_forwardAn experiment was conducted to compare the effectiveness of four training programs A, B, C, and D in teaching competencies of faculty. To assess the effectiveness of the training programs, twenty students were randomly assigned, to four teachers and were five 5 subjects to teach. After a specified time, the students were given with an examination and recorded the scores. Due to resignations some faculty did not finish the training program. The data are shown in the following table: Training Program SCORES SUBJECTS A 50 62 62 54 65 B 52 60 60 50 64 56 62 62 70 64 D 54 55 55 62 56 Do the data provided sufficient evidence at 5% level of significance, to indicate a difference in mean assembly times for employers trained by the four training programs? ANOVA Table: Mean Sum of Critical Value / Source of Variation Sum of Squares df F- value Decision Squares Tabular Value Between - column Within - column Total А. Но: На:arrow_forward
- Ear infections A new vaccine was recently tested to seeif it could prevent the painful and recurrent ear infectionsthat many infants suffer from. The Lancet, a medicaljournal, reported a study in which babies about a yearold were randomly divided into two groups. One group received vaccinations; the other did not. During the fol-lowing year, only 333 of 2455 vaccinated children had ear infections, compared to 499 of 2452 unvaccinatedchildren in the control group.a) Are the conditions for inference satisfied?b) Find a 95% confidence interval for the difference inrates of ear infection.c) Use your confidence interval to explain whether youthink the vaccine is effective.arrow_forwardThe US Department of Health and Human Services wants to know whether the healthcare system is achieving its goals in Virginia. Much information about healthcare comes from patient records, but that source doesn't allow us to compare people who use health services with those who don't. Therefore, the US Department of Health and Human Services conducted the Virginia Health Survey, which was used to interview a random sample of 65,439 people who live in the state of Virginia.Part A: What is the population for this sample survey? What is the sample? The survey found that 71% of males and 88% of females in the sample had visited a general practitioner at least once during the past year. Do you think these estimates are close to the truth about the entire population? Explain.arrow_forwardLightning Casualties. An issue of Travel+ Leisure Golf magazine reported several facts about lightning. Here are three of them. • The odds of an individual being struck by lightning in a year in the United States are about 280,000 to 1 (against).• The odds of an individual being struck by lightning in a year in Florida—the state with the most golf courses—are about 80,000 to 1 (against).• About 5% of all lightning fatalities occur on golf courses. Based on these data, answer the following questions. a. What is the probability of a person being struck by lightning in a year in the United States? Express your answer as a decimal rounded to eight places.b. What is the probability of a person being struck by lightning in a year in Florida? Express your answer as a decimal rounded to seven decimal places.c. If a person dies from being hit by lightning, what are the odds that the fatality did not occur on a golf course?arrow_forward
- Two pieces of information were gathered from 1212 randomly selected cities in the United States: the number of persons owning registered firearms and the murder rate. It was observed that cities with more registered firearms tended to have higher murder rates. Part A: Which is the population of interest in this study? People who own registered firearms in the United States Cities in the United States People who live in U.S. cities People who were murdered in the United States Part B: Which is the sample in this study? People who live in the 121U.S. cities People who own registered firearms in the 12 U.S. cities 12 cities in the United States People who were murdered in the 12 U.S. cities Part C: What type of study is this? A census, because it uses data from the entire population A statistical study, because it uses data from a sample Part D: Which of the following was not a variable observed in this study? The number of registered firearms in a given city Murder…arrow_forwardIn a Harvard Medical Practice Study, a sample of 31,429 medical records of hospital patoents were reviewed to assess the frequency of medical malpractice. Two types of malpractice were identified A. adverse events and B. negligence. An approximate 1% sample of records was reviewed on two different occasions by different review teams. The data in the tables below was obtained. A. Adverse events Review Process B + - Review Process A + 35 13 Review Process A - 21 249 Are the frequency of reporting of adverse events or negligence comparable in review process A ( the original review) and review process B ( the re review)? B. Negligence Review Process B + - Review Process A + 4 9 Review Process A - 12 293arrow_forwardQuestion 1 A consultancy firm took a random sample of the accounts of a mid-sized superannuation fund that draws clients from across Australia. The firm’s aim was to investigate the size of superannuation balances in the fund for various client categories. Data on the first eleven accounts are shown below. Recall the consultancy firm in Question 1 that took a random sample of the accounts of a mid-sized superannuation fund with clients across Australia to investigate the superannuation balances for various client categories. The table below provides counts from the data set for the variables Industry and Gender. Use the table to answer the following questions. i. Determine the probability that a superannuation account in the sample is from a Male account holder; ii. Determine the probability that an account in the sample is from a Male, given that the person works in Private industry; and iii. By considering the prior two probabilities, say if it appears that the variable Gender is…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig 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 MCDOUGALAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
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
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Solve ANY Optimization Problem in 5 Steps w/ Examples. What are they and How do you solve them?; Author: Ace Tutors;https://www.youtube.com/watch?v=BfOSKc_sncg;License: Standard YouTube License, CC-BY
Types of solution in LPP|Basic|Multiple solution|Unbounded|Infeasible|GTU|Special case of LP problem; Author: Mechanical Engineering Management;https://www.youtube.com/watch?v=F-D2WICq8Sk;License: Standard YouTube License, CC-BY
Optimization Problems in Calculus; Author: Professor Dave Explains;https://www.youtube.com/watch?v=q1U6AmIa_uQ;License: Standard YouTube License, CC-BY
Introduction to Optimization; Author: Math with Dr. Claire;https://www.youtube.com/watch?v=YLzgYm2tN8E;License: Standard YouTube License, CC-BY