Statistical Reasoning for Everyday Life - MyStatLab
5th Edition
ISBN: 9781323823781
Author: Bennett
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 6.4, Problem 9E
To determine
Calculate the fatality rates in deaths per 1,000 departures for the three years.
Identify the safest year, based on the rates and explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The following table gives the experience (in years) and the number of stocks sold during the previous three months by seven brokers in the Egyptian stock market.
Experience ( years)
4
12
9
6
10
16
7
Number of stocks
19
42
28
31
39
35
21
Predict the number of stocks sold during the past three months by broker with eleven years of experience.
The accompanying data below shows the South African population versus expenditure on new construction works by the public sector. Data was obtained from Statistics South Africa for the period between 2014 to 2017. What is the predicted expenditure on new construction if the population is 45 million?
Year
S.A. Population
(per million)
(x)
Expenditure on new construction
(per million)
(y)
2014
44.25
18.98
2015
44.75
21.23
2016
45.50
24.62
2017
45.58
20.15
Σx= 179.08
Σy= 84.98
Σxy = 3808.4045
Σx2 = 8018.2514
Σy2 = 1823.120
a = -183.9941
b = 4.5843
You have the following data:
Gasoline Sales during 2017.1 to 2020.4 (in 000 of barrels)
Year and quarter
Gasoline Sales
Year and quarter
Gasoline sales
2017.1
22434
2019.1
22776
2017.2
23766
2019.2
24491
2017.3
23860
2019.3
24751
2017.4
23391
2019.4
24170
2018.1
22662
2020.1
23302
2018.2
24032
2020.2
24045
2018.3
24171
2020.3
25437
2018.4
23803
2020.4
25272
(A)Using data on gasoline sales (in thousands of barrels) from the first quarter of 2017 to the last quarter of 2020, estimate the secular linear trend equation.
(B) Accordingly, forecast gasoline sales for the four quarters of 2021.
(C)Use the dummy variables methods to adjust the trend forecasts for the four quarters of2021 you made in (B) above to take the seasonal…
Chapter 6 Solutions
Statistical Reasoning for Everyday Life - MyStatLab
Ch. 6.1 - Coin Tossing. Suppose you toss a coin 100 times....Ch. 6.1 - Statistical Significance. What do we mean when we...Ch. 6.1 - Prob. 3ECh. 6.1 - Quantifying Significance. What does it mean to say...Ch. 6.1 - Does It Make Sense? For Exercises 58, determine...Ch. 6.1 - Does It Make Sense? For Exercises 58, determine...Ch. 6.1 - Does It Make Sense? For Exercises 58, determine...Ch. 6.1 - Does It Make Sense? For Exercises 58, determine...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...
Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Subjective Significance. For each event in...Ch. 6.1 - Prob. 17ECh. 6.1 - Carpal Tunnel Syndrome Treatments. An experiment...Ch. 6.1 - Prob. 19ECh. 6.1 - Prob. 20ECh. 6.1 - Human Body Temperature. In a study by researchers...Ch. 6.1 - Seat Belts and Children. In a study of children...Ch. 6.1 - Prob. 23ECh. 6.1 - Subjective Significance. For each event in...Ch. 6.2 - Outcomes and Events. Distinguish between an...Ch. 6.2 - Notation. What does it mean when we write P(A)?...Ch. 6.2 - Probability Types. Briefly describe the...Ch. 6.2 - Prob. 4ECh. 6.2 - Prob. 5ECh. 6.2 - Does It Make Sense? For Exercises 58, determine...Ch. 6.2 - Prob. 7ECh. 6.2 - Does It Make Sense? For Exercises 58, determine...Ch. 6.2 - Counting Outcomes. How many different three-child...Ch. 6.2 - Prob. 10ECh. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 1120, use...Ch. 6.2 - Days of the Week. What is the probability of...Ch. 6.2 - Days of the Week. What is the probability of...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Complementary Events. Exercises 2330 involve...Ch. 6.2 - Prob. 29ECh. 6.2 - Prob. 30ECh. 6.2 - Theoretical Probabilities. For Exercises 3134, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 3134, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 3134, use...Ch. 6.2 - Theoretical Probabilities. For Exercises 3134, use...Ch. 6.2 - Relative Frequency Probabilities. Use the relative...Ch. 6.2 - Relative Frequency Probabilities. Use the relative...Ch. 6.2 - Relative Frequency Probabilities. Use the relative...Ch. 6.2 - Prob. 38ECh. 6.2 - Probability Distributions. In Exercises 39 and 40,...Ch. 6.2 - Probability Distributions. In Exercises 39 and 40,...Ch. 6.3 - Law of Large Numbers. What is the law of large...Ch. 6.3 - Understanding the Law of Large Numbers. In terms...Ch. 6.3 - Expected Value. What is an expected value, and how...Ch. 6.3 - Gamblers Fallacy. What is the gamblers fallacy?...Ch. 6.3 - Prob. 5ECh. 6.3 - Does It Make Sense? For Exercises 58, determine...Ch. 6.3 - Prob. 7ECh. 6.3 - Does It Make Sense? For Exercises 58, determine...Ch. 6.3 - Gender Selection. In analyzing genders of...Ch. 6.3 - Speedy Driver. A person who has a habit of driving...Ch. 6.3 - Should You Play? Suppose you are offered this...Ch. 6.3 - Kentuckys Pick 4 Lottery. If you bet 1 in...Ch. 6.3 - Expected Value for Life Insurance. There is a...Ch. 6.3 - Expected Value for Life Insurance There is a...Ch. 6.3 - Expected Waiting Time. You arrive at a bus stop...Ch. 6.3 - Expected Value in Roulette. As shown in Figure...Ch. 6.3 - Expected Value in Casino Dice. When you give a...Ch. 6.3 - New Jersey Pick 4. In New Jerseys Pick 4 lottery,...Ch. 6.3 - Extra Points in Football. Football teams have the...Ch. 6.3 - Prob. 20ECh. 6.3 - Psychology of Expected Values. In 1953, a French...Ch. 6.3 - Behind in Coin Tossing: Can You Catch Up? Suppose...Ch. 6.4 - Risk and Travel. What is travel risk? Give an...Ch. 6.4 - Prob. 2ECh. 6.4 - Prob. 3ECh. 6.4 - Prob. 4ECh. 6.4 - Prob. 5ECh. 6.4 - Does It Make Sense? For Exercises 58, determine...Ch. 6.4 - Prob. 7ECh. 6.4 - Prob. 8ECh. 6.4 - Prob. 9ECh. 6.4 - Commercial Aviation. For Exercises 912, use the...Ch. 6.4 - Commercial Aviation. For Exercises 912, use the...Ch. 6.4 - Prob. 12ECh. 6.4 - Births/Deaths. For Exercises 1316, use the data in...Ch. 6.4 - Births/Deaths. For Exercises 1316, use the data in...Ch. 6.4 - Births/Deaths. For Exercises 1316, use the data in...Ch. 6.4 - Births/Deaths. For Exercises 1316, use the data in...Ch. 6.4 - Vital Statistics. For Exercises 1720, use the data...Ch. 6.4 - Vital Statistics. For Exercises 1720, use the data...Ch. 6.4 - Prob. 19ECh. 6.4 - Prob. 20ECh. 6.4 - Prob. 21ECh. 6.4 - Prob. 22ECh. 6.4 - Prob. 23ECh. 6.4 - Prob. 24ECh. 6.4 - Prob. 25ECh. 6.4 - Prob. 26ECh. 6.4 - Prob. 27ECh. 6.4 - Prob. 28ECh. 6.4 - Life in This Century. Example 5 assumed that the...Ch. 6.4 - Prob. 30ECh. 6.5 - Independence. Let A denote the event of getting a...Ch. 6.5 - Independence. A geneticist is working with 3 green...Ch. 6.5 - Prob. 3ECh. 6.5 - Complementary Events. Let A be the event of...Ch. 6.5 - Prob. 5ECh. 6.5 - Does It Make Sense? For Exercises 58, determine...Ch. 6.5 - Does It Make Sense? For Exercises 58, determine...Ch. 6.5 - Does It Make Sense? For Exercises 58, determine...Ch. 6.5 - Births. Assume that boys and girls are equally...Ch. 6.5 - Births. A couple plans to have four children. Find...Ch. 6.5 - Password. A programmer is instructed to create a...Ch. 6.5 - Wearing Hunter Orange. A study of hunting injuries...Ch. 6.5 - Songs. The 50 songs on a smartphone consist of 15...Ch. 6.5 - Polls. A pollster plans to call adults. She has a...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Probability and Court Decisions. In Exercises...Ch. 6.5 - Prob. 21ECh. 6.5 - Pedestrian Deaths. For Exercises 2126, use the...Ch. 6.5 - Prob. 23ECh. 6.5 - Pedestrian Deaths. For Exercises 2126, use the...Ch. 6.5 - Prob. 25ECh. 6.5 - Pedestrian Deaths. For Exercises 2126, use the...Ch. 6.5 - Clinical Trial. In a clinical trial of an allergy...Ch. 6.5 - Prob. 28ECh. 6.5 - Prob. 29ECh. 6.5 - Survey Refusals. Refer to the data in Exercise 29....Ch. 6.5 - Drug Testing. A 1-Panel-THC test for marijuana use...Ch. 6.5 - BINGO. The game of BINGO involves drawing numbered...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - For Exercises 17, use the data in the following...Ch. 6 - The Binary Computer Company manufactures computer...Ch. 6 - For a recent year, the fatality rate from motor...Ch. 6 - A Las Vegas handicapper can correctly predict the...Ch. 6 - For the handicapper in Exercise 1, find the...Ch. 6 - In a clinical trial of the effectiveness of a...Ch. 6 - If P(A) = 0.65, what is the value of P(not A)?Ch. 6 - In Exercises 610, use the following results. The...Ch. 6 - In Exercises 610, use the following results. The...Ch. 6 - Prob. 8CQCh. 6 - In Exercises 610, use the following results. The...Ch. 6 - In Exercises 610, use the following results. The...
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
- Urban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?arrow_forwardUse the table to answer the following questions. Year U.S population (millions) Traffic fatalities Licensed drivers(millions) Vehicle-miles (trillions) 1995 263 41,817 177 2.4 2015 321 35,092 218 3.1 Find and compare death rates per person and per 100,000 people for traffic fatalities per two years. Express the 1995 and 2015 fatality rates in deaths per100 million vehicle-miles traveled. Express the 1995 and 2015 fatality rates in deaths per 100,000 population. Express the 1995 and 2015 fatality rates in deaths per 100,000 licensed driversarrow_forwardThe following table gives data on quit rates per 100 employees in manufacturing and the unemployment rate in manufacturing in the U.S. for the period 1966-1971. Use the data to answer the following questions: Year Quit Rate (%), Y Unemployment Rate (%), X 1966 3 3 1967 2 4 1968 3 3 1969 3 3 1970 2 6 1971 2 7arrow_forward
- You are interested in expanding your research to determine if type of Honda or the colour affectssales. The data below represents the annual sales in hundreds of thousands: Red Blue Green Yellow BlackSmall 54 49 96 51 76Medium 44 50 50 55 80Large 35 64 89 48 61 The study is replicated for Toyota motor vehicles and the results shown below: Red Blue Green Yellow BlackSmall 40 64 49 45 68Medium 45 55 45 50 84Large 50 49 64 64 26 Combine the data from the two ande. Prepare the analysis of variance table manually (Show ALL workings) f. State the null hypothesis(es), the decision rule for α = 0.05 and make the decision foreach hypothesis. g. Confirm your answer using R-Studio. Provide the code used and relevant output tables. h. Using R-Studio, carry out relevant tests to determine if the assumptions of…arrow_forwardA study was undertaken to determine whether there was a significant weight (in lb) loss after one year course of therapy for diabetes, and whether the amount of weight (in lb) loss was related to initial weight. The following table gives the initial weight (x) and weight after one year of therapy (y) for 16 newly diagnosed adult diabetic patients.arrow_forwardA researcher wishes to study the relationship between education and income separately for individuals who have college degrees, and for those who don't. To this end, he interviews 100 individuals in each category. Survey results are listed in the table below. non college graduates college graduates avg education 13 yr 18 yr std. dev. education 2 yr 1.2 yr Sxx 396 yr2 143 yr2 Avg. Income $67,200 $84,950 std. dev. income $9,400 $10,500 correlation coefficient .25 .15 a. Use the data above to find point estimates for regression coefficients B0NG and B1NG for non-college graduates and BoG and B1G for college graduates. b. Propose an unbiased estimator for the difference theta=B1G - B1NG in slope coefficients for the two sub-populations, and show that B(theta hat)= 0. c. Assume that the error terms ENG and EG for non-graduates and graduates, respectively, are both distributed normally, with known standard deviation oENG = oEG = $ 10,000. In that case, determine the…arrow_forward
- The following data give the average price received by fishermen for several species of fish in 2000 and 2010. The price is in cents per pound. Fish Year 2000 Price (x) Year 2010 Price (y) COD 13.1 43.3 FLOUNDER 15.3 141.1 HADDOCK 25.8 151.1 MENHADEN 1.8 71.6 PERCH 4.9 105.7 CHINOOK 55.4 160.3 COHO 39.3 181.5 ALBACORE 26.7 137.2 SOFT SHELLED CLAMS 47.5 157.7 LOBSTERS AMERICAN 94.7 370.7 SEA SCALLOPS 135.6 416.8 SHRIMP 47.6 151.6 Create a regression equation for the data.y^= ________ Round to 2 decimal places. What is the correlation coefficient between the 2000 and 2010 prices. Round to 2 decimal places. If a type of fish was 41.3 cents per pound in 2000, how much would you expect to pay for it in 2010? __________¢/lbs Round to 1 decimal places.arrow_forwardThe following table gives the experience (in years) and the number of computers sold during the previous three months by seven salespersons. Experience ( years) 4 12 9 6 10 16 7 Computer sold {unit) 19 42 28 31 39 35 21 Predict the number of computers sold during the past three months by salespersons with eleven years ofarrow_forwardThe table below gives the percent of U.S. seniors (aged 65+ years) who used the internet in selected years. Year 2012 2014 2016 2018 2019 % of U.S. seniors using internet 54 57 64 66 73 Use a line of best-fit to predict the percent of U.S. seniors who will use the internet in the year 2022. A. 74 % B.76 % C.77 % D.79 % E.81 %arrow_forward
- the number of sstudents enrolled at beach manor preschool during various years is givEN in the table below. use the line of best fit to predict the number of students enrolled in 2010. year (x) 1984 1987 1990 1993 1996 1999 2002 entrants (y) 39 45 52 61 72 78 85arrow_forwardHow profitable are different sectors of the stock market? One way to answer such a question is to examine profit as a percentage of stockholder equity. A random sample of 27 retail stocks such as Toys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity. The result was x1 = 14.4. A random sample of 36 utility (gas and electric) stocks such as Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as a percentage of stockholder equity. The result was x2 = 9.7. Assume that σ1 = 3.1 and σ2 = 2.9. (a) Categorize the problem below according to parameter being estimated, proportion p, mean μ, difference of means μ1 – μ2, or difference of proportions p1 – p2. Then solve the problem. pμ p1 – p2μ1 – μ2 (b) Let μ1 represent the population mean profit as a percentage of stockholder equity for retail stocks, and let μ2 represent the population mean profit as a percentage of stockholder equity for utility stocks. Find a 90%…arrow_forwardHow profitable are different sectors of the stock market? One way to answer such a question is to examine profit as a percentage of stockholder equity. A random sample of 27 retail stocks such as Toys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity. The result was x1 = 14.4. A random sample of 36 utility (gas and electric) stocks such as Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as a percentage of stockholder equity. The result was x2 = 9.7. Assume that σ1 = 3.1 and σ2 = 2.9. (a) Categorize the problem below according to parameter being estimated, proportion p, mean μ, difference of means μ1 – μ2, or difference of proportions p1 – p2. Then solve the problem. pμ p1 – p2μ1 – μ2 (b) Let μ1 represent the population mean profit as a percentage of stockholder equity for retail stocks, and let μ2 represent the population mean profit as a percentage of stockholder equity for utility stocks. Find a 90%…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning
Functions and Change: A Modeling Approach to Coll...
Algebra
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Cengage Learning
Use of ALGEBRA in REAL LIFE; Author: Fast and Easy Maths !;https://www.youtube.com/watch?v=9_PbWFpvkDc;License: Standard YouTube License, CC-BY
Compound Interest Formula Explained, Investment, Monthly & Continuously, Word Problems, Algebra; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=P182Abv3fOk;License: Standard YouTube License, CC-BY
Applications of Algebra (Digit, Age, Work, Clock, Mixture and Rate Problems); Author: EngineerProf PH;https://www.youtube.com/watch?v=Y8aJ_wYCS2g;License: Standard YouTube License, CC-BY