Statistics (13th Edition)
13th Edition
ISBN: 9780134080215
Author: James T. McClave, Terry T Sincich
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 14, Problem 128ACI
To determine
Check whether the data provide sufficient evidence to indicate that the firstborn of a pair of twins is more aggressive than the other or not.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Questions
An insurance company's cumulative incurred claims for the last 5 accident years are given
in the following table:
Development Year
Accident Year 0
2018
1 2 3 4
245 267 274 289 292
2019
255 276 288 294
2020
265 283 292
2021
263 278
2022
271
It can be assumed that claims are fully run off after 4 years. The premiums received for
each year are:
Accident Year Premium
2018
306
2019
312
2020
318
2021
326
2022
330
You do not need to make any allowance for inflation.
1. (a) Calculate the reserve at the end of 2022 using the basic chain ladder method.
(b) Calculate the reserve at the end of 2022 using the Bornhuetter-Ferguson method.
2. Comment on the differences in the reserves produced by the methods in Part 1.
Questions
An insurance company's cumulative incurred claims for the last 5 accident years are given
in the following table:
Development Year
Accident Year 0
2018
1 2 3 4
245 267 274 289 292
2019
255 276 288 294
2020
265 283 292
2021
263 278
2022
271
It can be assumed that claims are fully run off after 4 years. The premiums received for
each year are:
Accident Year Premium
2018
306
2019
312
2020
318
2021
326
2022
330
You do not need to make any allowance for inflation.
1. (a) Calculate the reserve at the end of 2022 using the basic chain ladder method.
(b) Calculate the reserve at the end of 2022 using the Bornhuetter-Ferguson method.
2. Comment on the differences in the reserves produced by the methods in Part 1.
From a sample of 26 graduate students, the mean number of months of work experience prior to entering an MBA program was 34.67. The national standard deviation is known to be18 months. What is a 90% confidence interval for the population mean?
Question content area bottom
Part 1
A
9090%
confidence interval for the population mean is
left bracket nothing comma nothing right bracketenter your response here,enter your response here.
(Use ascending order. Round to two decimal places as needed.)
Chapter 14 Solutions
Statistics (13th Edition)
Ch. 14.2 - Prob. 1UPCh. 14.2 - Prob. 2UPCh. 14.2 - Prob. 3LMCh. 14.2 - Prob. 4LMCh. 14.2 - Prob. 5LMCh. 14.2 - Music performance anxiety. Refer to the British...Ch. 14.2 - Prob. 7ACBCh. 14.2 - 15.8 Caffeine in Starbucks coffee. Researchers at...Ch. 14.2 - Emotional empathy in young adults. Refer to the...Ch. 14.2 - Prob. 10ACB
Ch. 14.2 - Prob. 11ACBCh. 14.2 - Prob. 12ACICh. 14.2 - 15.10 Lobster trap placement. Refer to the...Ch. 14.2 - Prob. 14ACICh. 14.2 - Prob. 15ACICh. 14.2 - Prob. 16ACICh. 14.2 - Prob. 17ACICh. 14.3 - What is a rank sum?
Ch. 14.3 - Prob. 19UPCh. 14.3 - Prob. 20UPCh. 14.3 - Prob. 21LMCh. 14.3 - 15.17 Suppose you want to compare two treatments,...Ch. 14.3 - Prob. 23LMCh. 14.3 - Random samples of sizes n1 = 16 and n2 = 12 were...Ch. 14.3 - 15.18 Independent random samples are selected from...Ch. 14.3 - Prob. 26ACBCh. 14.3 - Prob. 27ACBCh. 14.3 - Prob. 28ACBCh. 14.3 - 15.23 The X-Factor in golf performance. Many golf...Ch. 14.3 - Prob. 30ACBCh. 14.3 - Prob. 31ACBCh. 14.3 - 15.85 Children’s recall of TV ads. Refer to the...Ch. 14.3 - Prob. 33ACICh. 14.3 - Prob. 34ACICh. 14.3 - Prob. 35ACICh. 14.3 - Prob. 36ACICh. 14.3 - Prob. 37ACICh. 14.3 - Prob. 38ACICh. 14.3 - Prob. 39ACICh. 14.4 - Explain the difference between the one- and...Ch. 14.4 - Prob. 41UPCh. 14.4 - Prob. 42LMCh. 14.4 - Prob. 43LMCh. 14.4 - Prob. 44LMCh. 14.4 - Prob. 45LMCh. 14.4 - A random sample of nine pairs of measurements is...Ch. 14.4 - Prob. 47ACBCh. 14.4 - Prob. 48ACBCh. 14.4 - Prob. 49ACBCh. 14.4 - Prob. 50ACBCh. 14.4 - Reading comprehension strategies of elementary...Ch. 14.4 - Prob. 52ACBCh. 14.4 - Prob. 53ACICh. 14.4 - Prob. 54ACICh. 14.4 - Prob. 55ACICh. 14.4 - Neurological impairment of POWs. Eleven prisoners...Ch. 14.4 - Prob. 57ACICh. 14.4 - Prob. 58ACACh. 14.5 - 15.43 Under what circumstances does the χ2...Ch. 14.5 - Which of the following results would lead you to...Ch. 14.5 - Suppose you want to use the Kruskal-Wallis H-test...Ch. 14.5 - Data were collected from three populations—A, B...Ch. 14.5 - 15.46 Containing wildfires. The International...Ch. 14.5 - 15.47 Road safety of neighborhoods. The Canadian...Ch. 14.5 - Dog behavior on walks. A field study was conducted...Ch. 14.5 - 15.49 Improving driving performance while...Ch. 14.5 - Effect of scopolamine on memory. Refer to the...Ch. 14.5 - 15.48 Commercial eggs produced from different...Ch. 14.5 - 15.50 Relieving pain with hypnosis. Rehabilitation...Ch. 14.5 - Energy expenditure of laughter. Refer to the...Ch. 14.5 -
Restoring self-control when intoxicated. Refer...Ch. 14.5 - Ground water contamination of wells. Refer to the...Ch. 14.5 - The “name game.” Refer to the Journal of...Ch. 14.5 -
Is honey a cough remedy? Refer to the Archives...Ch. 14.6 - Which of the following statements correctly...Ch. 14.6 - What conditions are required for a valid...Ch. 14.6 - Data were collected under a randomized block...Ch. 14.6 - 15.55 Suppose you have used a randomized block...Ch. 14.6 - 15.56 An experiment was conducted using a...Ch. 14.6 - A new method of evaluating health care research...Ch. 14.6 - Prob. 81ACBCh. 14.6 - 15.64 Containers designed to cool citrus fruit....Ch. 14.6 - 15.57 Estimating time needed to complete a task....Ch. 14.6 - 15.60 Taste testing scales. Refer to the Journal...Ch. 14.6 - Impact study of distractions while driving. The...Ch. 14.6 - 15.58 Condit ions impeding farm production. A...Ch. 14.6 - “Topsy-turvy” seasons in college football. Refer...Ch. 14.6 - 15.65 Irrelevant facial similarity effects on...Ch. 14.6 - Effect of massage on boxers. Refer to the British...Ch. 14.6 - Plants and stress reduction. Refer to the Kansas...Ch. 14.7 - What is the value of rS when there is perfect...Ch. 14.7 - What conditions are required for a valid...Ch. 14.7 - 15.66 Use Table XIV at the end of this chapter to...Ch. 14.7 - 15.67 Specify the rejection region for Spearman’s...Ch. 14.7 - 15.69 Compute Spearman s rank correlation...Ch. 14.7 - 15.68 The following sample data were collected on...Ch. 14.7 - Measuring the moon’s orbit. Refer to the American...Ch. 14.7 - Mongolian desert ants. Refer to the Journal of...Ch. 14.7 - Game performance of water polo players. Refer to...Ch. 14.7 - Lobster fishing study. Refer to the Bulletin of...Ch. 14.7 - Effect of massage on boxers. Refer to the British...Ch. 14.7 - Childhood obesity study. Refer to the Journal of...Ch. 14.7 - Groundwater contamination of wells. Refer to the...Ch. 14.7 - The “name game.” Refer to the Journal of...Ch. 14.7 - 15.76 Taste testing scales. Refer to the Journal...Ch. 14.7 - 15.75 In business, do nice guys finish first or...Ch. 14.7 - 15.74 Food availability at middle schools. Refer...Ch. 14.7 - Pain empathy and brain activity. Refer to the...Ch. 14.7 - Public perceptions of health risks. Refer to the...Ch. 14 - Prob. 110UPCh. 14 - For each of the following, give the appropriate...Ch. 14 - 15.80 The data for three independent random...Ch. 14 - 15.81 A random sample of nine pairs of...Ch. 14 - 15.82 Two independent random samples produced the...Ch. 14 - 15.83 An experiment was conducted using a...Ch. 14 - Radioactive lichen. Refer to the Lichen...Ch. 14 - Prob. 118ACBCh. 14 - Prob. 119ACBCh. 14 - Prob. 120ACBCh. 14 - Prob. 121ACBCh. 14 - Extending the life of an aluminum smelter pot....Ch. 14 - 15.36 NHTSA new car crash tests. Refer to the...Ch. 14 - Prob. 124ACICh. 14 - Prob. 125ACICh. 14 - Prob. 126ACICh. 14 - Prob. 127ACICh. 14 - Prob. 128ACICh. 14 - Prob. 129ACICh. 14 - Prob. 130ACICh. 14 - Prob. 131ACICh. 14 - Prob. 132ACICh. 14 - Prob. 133ACICh. 14 - Prob. 134ACICh. 14 - Prob. 135ACICh. 14 - Prob. 136ACICh. 14 - Prob. 137ACICh. 14 - Prob. 138CTC
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
- A test consists of 10 questions made of 5 answers with only one correct answer. To pass the test, a student must answer at least 8 questions correctly. (a) If a student guesses on each question, what is the probability that the student passes the test? (b) Find the mean and standard deviation of the number of correct answers. (c) Is it unusual for a student to pass the test by guessing? Explain.arrow_forwardIn a group of 40 people, 35% have never been abroad. Two people are selected at random without replacement and are asked about their past travel experience. a. Is this a binomial experiment? Why or why not? What is the probability that in a random sample of 2, no one has been abroad? b. What is the probability that in a random sample of 2, at least one has been abroad?arrow_forwardQuestions An insurance company's cumulative incurred claims for the last 5 accident years are given in the following table: Development Year Accident Year 0 2018 1 2 3 4 245 267 274 289 292 2019 255 276 288 294 2020 265 283 292 2021 263 278 2022 271 It can be assumed that claims are fully run off after 4 years. The premiums received for each year are: Accident Year Premium 2018 306 2019 312 2020 318 2021 326 2022 330 You do not need to make any allowance for inflation. 1. (a) Calculate the reserve at the end of 2022 using the basic chain ladder method. (b) Calculate the reserve at the end of 2022 using the Bornhuetter-Ferguson method. 2. Comment on the differences in the reserves produced by the methods in Part 1.arrow_forward
- To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13-inch models (Consumer Reports website, October 25, 2012). Brand & Model Price ($) Overall Score Samsung Ultrabook NP900X3C-A01US 1250 83 Apple MacBook Air MC965LL/A 1300 83 Apple MacBook Air MD231LL/A 1200 82 HP ENVY 13-2050nr Spectre XT 950 79 Sony VAIO SVS13112FXB 800 77 Acer Aspire S5-391-9880 Ultrabook 1200 74 Apple MacBook Pro MD101LL/A 1200 74 Apple MacBook Pro MD313LL/A 1000 73 Dell Inspiron I13Z-6591SLV 700 67 Samsung NP535U3C-A01US 600 63 a. Select a scatter diagram with price as the independent variable. b. What does the scatter diagram developed in part (a) indicate about the relationship…arrow_forwardTo the Internal Revenue Service, the reasonableness of total itemized deductions depends on the taxpayer’s adjusted gross income. Large deductions, which include charity and medical deductions, are more reasonable for taxpayers with large adjusted gross incomes. If a taxpayer claims larger than average itemized deductions for a given level of income, the chances of an IRS audit are increased. Data (in thousands of dollars) on adjusted gross income and the average or reasonable amount of itemized deductions follow. Adjusted Gross Income ($1000s) Reasonable Amount ofItemized Deductions ($1000s) 22 9.6 27 9.6 32 10.1 48 11.1 65 13.5 85 17.7 120 25.5 Compute b1 and b0 (to 4 decimals).b1 b0 Complete the estimated regression equation (to 2 decimals). = + x Predict a reasonable level of total itemized deductions for a taxpayer with an adjusted gross income of $52.5 thousand (to 2 decimals). thousand dollarsWhat is the value, in dollars, of…arrow_forwardK The mean height of women in a country (ages 20-29) is 63.7 inches. A random sample of 65 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume σ = 2.68. The probability that the mean height for the sample is greater than 64 inches is (Round to four decimal places as needed.)arrow_forward
- In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.6 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. (a) Find the probability that a study participant has a height that is less than 68 inches. The probability that the study participant selected at random is less than 68 inches tall is 0.4. (Round to four decimal places as needed.) 20 2arrow_forwardPEER REPLY 1: Choose a classmate's Main Post and review their decision making process. 1. Choose a risk level for each of the states of nature (assign a probability value to each). 2. Explain why each risk level is chosen. 3. Which alternative do you believe would be the best based on the maximum EMV? 4. Do you feel determining the expected value with perfect information (EVWPI) is worthwhile in this situation? Why or why not?arrow_forwardQuestions An insurance company's cumulative incurred claims for the last 5 accident years are given in the following table: Development Year Accident Year 0 2018 1 2 3 4 245 267 274 289 292 2019 255 276 288 294 2020 265 283 292 2021 263 278 2022 271 It can be assumed that claims are fully run off after 4 years. The premiums received for each year are: Accident Year Premium 2018 306 2019 312 2020 318 2021 326 2022 330 You do not need to make any allowance for inflation. 1. (a) Calculate the reserve at the end of 2022 using the basic chain ladder method. (b) Calculate the reserve at the end of 2022 using the Bornhuetter-Ferguson method. 2. Comment on the differences in the reserves produced by the methods in Part 1.arrow_forward
- You are provided with data that includes all 50 states of the United States. Your task is to draw a sample of: o 20 States using Random Sampling (2 points: 1 for random number generation; 1 for random sample) o 10 States using Systematic Sampling (4 points: 1 for random numbers generation; 1 for random sample different from the previous answer; 1 for correct K value calculation table; 1 for correct sample drawn by using systematic sampling) (For systematic sampling, do not use the original data directly. Instead, first randomize the data, and then use the randomized dataset to draw your sample. Furthermore, do not use the random list previously generated, instead, generate a new random sample for this part. For more details, please see the snapshot provided at the end.) Upload a Microsoft Excel file with two separate sheets. One sheet provides random sampling while the other provides systematic sampling. Excel snapshots that can help you in organizing columns are provided on the next…arrow_forwardThe population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n = 65, find the probability of a sample mean being greater than 225 if μ = 224 and σ = 3.5. For a sample of n = 65, the probability of a sample mean being greater than 225 if μ=224 and σ = 3.5 is 0.0102 (Round to four decimal places as needed.)arrow_forward***Please do not just simply copy and paste the other solution for this problem posted on bartleby as that solution does not have all of the parts completed for this problem. Please answer this I will leave a like on the problem. The data needed to answer this question is given in the following link (file is on view only so if you would like to make a copy to make it easier for yourself feel free to do so) https://docs.google.com/spreadsheets/d/1aV5rsxdNjHnkeTkm5VqHzBXZgW-Ptbs3vqwk0SYiQPo/edit?usp=sharingarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman
what is Research Design, Research Design Types, and Research Design Methods; Author: Educational Hub;https://www.youtube.com/watch?v=LpmGSioXxdo;License: Standard YouTube License, CC-BY