![Bundle: Finite Mathematics, Loose-leaf Version, 7th + WebAssign Printed Access Card for Waner/Costenoble's Finite Mathematics, 7th Edition, Single-Term](https://www.bartleby.com/isbn_cover_images/9781337604949/9781337604949_largeCoverImage.gif)
Concept explainers
Highway Safety Exercises 41–50 are based on the following table, which shows crashworthiness ratings for several categories of motor vehicles.10 In all of these exercises, take X as the crash-test rating of a small car, Y as the crash-test rating for a small SUV, and so on, as shown in the table.
Overall Frontal Crash Test Rating | |||||
Number Tested | 3(Good) | 2(Acceptable) | 1(Marginal) | 0(Poor) | |
Small Cars, X | 16 | 1 | 11 | 2 | 2 |
Small SUVs, Y | 10 | 1 | 4 | 4 | 1 |
Medium SUVs, Z | 15 | 3 | 5 | 3 | 4 |
Passenger Vans, U | 13 | 3 | 0 | 3 | 7 |
Midsize Cars, V | 15 | 3 | 5 | 0 | 7 |
Large Cars, W | 19 | 9 | 5 | 3 | 2 |
Compare
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 8 Solutions
Bundle: Finite Mathematics, Loose-leaf Version, 7th + WebAssign Printed Access Card for Waner/Costenoble's Finite Mathematics, 7th Edition, Single-Term
- You may need to use the appropriate technology to answer this question. An automobile dealer conducted a test to determine if the time in minutes needed to complete a minor engine tune-up depends on whether a computerized engine analyzer or an electronic analyzer is used. Because tune-up time varies among compact, intermediate, and full-sized cars, the three types of cars were us blocks in the experiment. The data obtained follow. Analyzer Computerized Electronic Compact 50 41 Car Intermediate 54 44 Full-sized 64 47 Use a = 0.05 to test for any significant differences. State the null and alternative hypotheses. O Ho: MCompact = "Intermediate = "Full-sized H: "Compact *"Intermediate * Full-sized O Ho: "Compact * "Intermediate * Full-sized H: "Compact = "Intermediate "Full-sized O Ho: "Computerized = HElectronic H: "Computerized * "Electronic O Ho: "Computerized = "Electronic = "Compact = 4Intermediate = "Full-sized H: Not all the population means are equal. O Ho: "Computerized *…arrow_forward50 psychology students took a standardized test. The scores are summarized in the GFDT below.arrow_forwardFor the next items, identity the appropriate statistical test that will be utilized in hypothesis testing. SE T- test T- test (one factor/sample) (Dependent) (Independent) T-test F- Test (Standard Error)arrow_forward
- (b) Figure Q1(b) shows the data from the survey conducted among teenagers who drive a car on the rural road and their involvement with traffic accidents. Based on the information given: Provide your calculation of the total numbers of teenagers who drive a car on the road. i. ii. Based on your understanding what is the probability of teenagers getting involved in accidents during both day and night times? iii. Interpret the probability of teenagers who were not getting involved in accidents during day time.arrow_forwardA large manufacturing company producing air conditioner compressor believes the number of units of air conditioner sold is related to atmospheric temperature. An R&D officer conducted a study and gathered the following data: 3. Day Sale Temperature (Fahrenheit) 63 (in thousands) 1.52 1 2 70 1.68 3 73 1.8 4 75 2.05 80 2.36 6. 82 2.25 7 85 2.68 8 88 2.9 9. 90 3.14 3.06 3.24 10 91 11 92 12 75 1.92 13 98 3.4 14 100 3.28 Construct an estimated regression line between temperature and number of units sold. а) b) Does the model in part (a) confirm that contribution of temperature to number of units of air conditioner sold? Test using a 0.05. Find the coefficient of correlation. What does the value imply about the relationship of the two variables? c) If the temperature soared to 120 Fahrenheit, can you predict the number of units of air conditioner sold? Explain d)arrow_forwardThe table lists the average gestation period (in days) and longevity (in years) for the following mammals, as reported in The World Almanac and Book of Facts 2006. Mammal Gestation, y(days) Longevity, x(years) Mammal Gestation, y(days) Longevity, x(years) Baboon 187 20 Camel 406 12 Bear, black 219 18 Cat 63 12 Bear, grizzly 225 25 Chimpanzee 230 20 Bear, polar 240 20 Chipmunk 31 6 Beaver 105 5 Cow 284 15 Buffalo 285 15 Deer 201 8 Dog 61 12 Monkey 164 15 Donkey 365 12 Moose 240 12 Elephant 645 40 Mouse 21 3 Elk 250 15 Opossum 13 1 Fox 52 7 Pig 112 10 Giraffe 457 10 Puma 90 12 Goat 151 8 Rabbit 31 5 Gorilla 258 20 Rhinoceros 450 15 Guinea pig 48 4 Sea lion 350 12 Hippopotamus 238 41 Sheep 154 12 Horse 330 20 Squirrel 44 10 Kangaroo…arrow_forward
- The table lists the average gestation period (in days) and longevity (in years) for the following mammals, as reported in The World Almanac and Book of Facts 2006. Mammal Gestation, y(days) Longevity, x(years) Mammal Gestation, y(days) Longevity, x(years) Baboon 187 20 Camel 406 12 Bear, black 219 18 Cat 63 12 Bear, grizzly 225 25 Chimpanzee 230 20 Bear, polar 240 20 Chipmunk 31 6 Beaver 105 5 Cow 284 15 Buffalo 285 15 Deer 201 8 Dog 61 12 Monkey 164 15 Donkey 365 12 Moose 240 12 Elephant 645 40 Mouse 21 3 Elk 250 15 Opossum 13 1 Fox 52 7 Pig 112 10 Giraffe 457 10 Puma 90 12 Goat 151 8 Rabbit 31 5 Gorilla 258 20 Rhinoceros 450 15 Guinea pig 48 4 Sea lion 350 12 Hippopotamus 238 41 Sheep 154 12 Horse 330 20 Squirrel 44 10 Kangaroo…arrow_forwardC. Describe the four characteristics of associationarrow_forwardAn economist is studying the job market in Denver area neighborhoods. Let x represent the total number of jobs in a given neighborhood, and let y represent the number of entry-level jobs in the same neighborhood. A sample of six Denver neighborhoods gave the following information (units in hundreds of jobs). I need help with (d) (e) and (f)arrow_forward
- The Senator of Azenator State, is worried about the rising numbers in high blood pressure related deaths in his Jurisdiction and wants an end to this canker. A reputable medical research officer has claimed that, the situation is probably as a result of the ageing population of his State. The blood pressures, Y (mmHg), and Ages, X (years) of 10 hospital patients were sampled from Azenator State and summarized below. Patient A B C D E F G H I J Age(X) in Years 20 25 50 30 45 60 10 15 35 70 BP(Y) in (mmHg) 80 85 125 90 100 135 80 70 100 140 NB: Approximate to 2 decimal placesUse the table to answer the questions that follow;i) Calculate the product moment correlation coefficient for the data and interpret your result.ii) If the Senator decides to purchase and distribute Norvasc (a medicine that reduces blood pressure), based on your results in (i), which age group (youth or old adults) should be given priority? Briefly explain your answer. iii) Give a reason to support fitting…arrow_forwardb. An evaluation to study the relationship between quality of sleep and amount of exercises required in order to maintain a healthy lifestyle. Let X be the number of sleeping hours, and Y be the number of hours doing physical activities on weekly basis. The resuilts have been summarized in Table 2 below. Table 2 Y = 6 Y =7Y = 8 Total X= 6 0.05 0.04 0.10 0.19 X=7 0.04 0.16 0.20 0.40 X = 8 0.02 0.09 0.30 0.41 Total 0.11 0.29 0.60 1.00 Find the probability that an individual has fewer physical acțivities than sleeping hours, P(Y < X).arrow_forwardHeart rate during laughter. Laughter is often called “the best medicine,” since studies have shown that laughter can reduce muscle tension and increase oxygenation of the blood. In the International Journal of Obesity (Jan. 2007), researchers at Vanderbilt University investigated the physiological changes that accompany laughter. Ninety subjects (18–34 years old) watched film clips designed to evoke laughter. During the laughing period, the researchers measured the heart rate (beats per minute) of each subject, with the following summary results: Mean = 73.5, Standard Deviation = 6. n=90 (we can treat this as a large sample and use z) It is well known that the mean resting heart rate of adults is 71 beats per minute. Based on the research on laughter and heart rate, we would expect subjects to have a higher heart beat rate while laughing.Construct 95% Confidence interval using z value. What is the lower bound of CI? a) Calculate the value of the test statistic.(z*) b) If…arrow_forward
- Discrete Mathematics and Its Applications ( 8th I...MathISBN:9781259676512Author:Kenneth H RosenPublisher:McGraw-Hill EducationMathematics for Elementary Teachers with Activiti...MathISBN:9780134392790Author:Beckmann, SybillaPublisher:PEARSON
- Thinking Mathematically (7th Edition)MathISBN:9780134683713Author:Robert F. BlitzerPublisher:PEARSONDiscrete Mathematics With ApplicationsMathISBN:9781337694193Author:EPP, Susanna S.Publisher:Cengage Learning,Pathways To Math Literacy (looseleaf)MathISBN:9781259985607Author:David Sobecki Professor, Brian A. MercerPublisher:McGraw-Hill Education
![Text book image](https://www.bartleby.com/isbn_cover_images/9781259676512/9781259676512_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134392790/9780134392790_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781938168024/9781938168024_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134683713/9780134683713_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337694193/9781337694193_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781259985607/9781259985607_smallCoverImage.gif)