Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Chapter 13.2, Problem 4E
In an experiment designed to test the output levels of three different treatments, the following results were obtained: SST = 400. SSTR = 150. nT = 19. Set up the ANOVA table and test for any significant difference between the
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Veterinarians suspect that enteroliths, calcifications in the gut of horses, are related to diet-in particular, alfalfa. To investigate
this suspicion, a group of veterinarians collected information on the diet of horses and whether the horses developed enteroliths.
The table displays the findings.
less than 25% alfalfa in diet
25%-50% alfalfa in diet
greater than 50% alfalfa in die
Total
3
Has enteroliths
0.05
Does not have enteroliths
0.40
Total
0.07
0.25
0.08
0.20
0.15
0.80
0.45
0.32
0.23
1
The probability that a randomly selected horse has enteroliths given that it is fed more than 50% alfalfa is:
○ 0.08.
0.23.
○ 0.2.
○ 0.348.
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Many young men in North America and Europe (but not in Asia) tend to think they need more muscle to be attractive. One
study presented 200 young American men with 100 images of men with various levels of muscle. Researchers measure level of
muscle in kilograms per square meter (kg/m²) of fat-free body mass. Typical young men have about 20 kg/m². Each subject
chose two images, one that represented his own level of body muscle and one that he thought represented "what women prefer."
The mean gap between self-image and "what women prefer" was 2.35 kg/m².
Suppose that the "muscle gap" in the population of all young men has a Normal distribution with standard deviation 2.5 kg/m²
Give a 90% confidence interval for the mean amount of muscle
think they should add to be attractive to women
(Enter your answers rounded to four decimal places.)
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Is the normal distribution important in statistics analysis? If yes, why? If no, why?
Is the normal distribution always being defined by its mean and standard deviation? Discuss.
Discuss with examples
c) Graphs illustrating the problems and solutions are recommended
Chapter 13 Solutions
Essentials Of Statistics For Business & Economics
Ch. 13.2 - The following data are from a completely...Ch. 13.2 - 2. In a completely randomized design, seven...Ch. 13.2 - 3. Refer to exercise 2.
what hypotheses are...Ch. 13.2 - 4. In an experiment designed to test the output...Ch. 13.2 - 5. In a completely randomized design, 12...Ch. 13.2 - Develop the analysis of variance computations for...Ch. 13.2 - 7. Three different methods for assembling a...Ch. 13.2 - 8. Refer to the NCP data in Table 13.4. Set up the...Ch. 13.2 - To study the effect of temperature on yield in a...Ch. 13.2 - Prob. 10E
Ch. 13.2 - Paint-Drying Robots. How long it takes paint to...Ch. 13.2 - Restaurant Satisfaction. The Consumer Reports...Ch. 13.3 - The following data are from a completely...Ch. 13.3 - The following data are from a completely...Ch. 13.3 - Testing Chemical Processes. To test whether the...Ch. 13.3 - Confidence Intervals for Different Processes....Ch. 13.3 - Marketing Ethics. In the digital age of marketing,...Ch. 13.3 - Machine Breakdowns. To test for any significant...Ch. 13.3 - Testing Time to Breakdown Between All Pairs of...Ch. 13.3 - Minor league Baseball Attendance. The...Ch. 13.4 - Consider the experimental results for the...Ch. 13.4 - Prob. 22ECh. 13.4 - An experiment has been conducted for four...Ch. 13.4 - Auto Tune-Ups. An automobile dealer conducted a...Ch. 13.4 - Airfares on Travel Websites. Are there differences...Ch. 13.4 - SAT Performance. The Scholastic Aptitude Test...Ch. 13.4 - Consumer Preferences. In 2018, consumer goods...Ch. 13.5 - A factorial experiment involving two levels of...Ch. 13.5 - The calculations for a factorial experiment...Ch. 13.5 - Mobile App Website Design. Based on a 2018 study,...Ch. 13.5 - Amusement Park Queues. An amusement park studied...Ch. 13.5 - Auto Fuel Efficiency. As part of a study designed...Ch. 13.5 - Tax Research. A study reported in The Accounting...Ch. 13 - Paper Towel Absorption. In a completely randomized...Ch. 13 - Job Satisfaction. A study reported in the Journal...Ch. 13 - Prob. 36SECh. 13 - College Attendance Rates. The following data show...Ch. 13 - Assembly Methods. Three different assembly methods...Ch. 13 - Job Automation. A Pew Research study conducted in...Ch. 13 - Fuel Efficiency of Gasoline Brands. A research...Ch. 13 - Late-Night Talk Show Viewership. Jimmy Kimmel...Ch. 13 - Golf Club Design. A major manufacturer of golf...Ch. 13 - Language Translation. A factorial experiment was...Ch. 13 - Defective Parts. A manufacturing company designed...Ch. 13 - CASE PROBLEM 1: WENTWORTH MEDICAL CENTER As part...Ch. 13 - CASE PROBLEM 2: COMPENSATION FOR SALES...Ch. 13 - TOURISTOPIA TRAVEL TourisTopia Travel (Triple T)...
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