Concept explainers
To explain how bias in the sampling method could affect the estimate.
Explanation of Solution
According to the question, the feedback of customers is based on online ratings.
So, the sampling is biased towards those who actually give ratings online. Only a portion of actual customers provide online ratings which means that the actual feelings of all the customers cannot be known just from the “online ratings”. In reality the rating would have been higher or lower compared to the online rating, which makes it difficult to actually estimate the actual feedback from the customer.
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
Thinking Mathematically (6th Edition)
A First Course in Probability (10th Edition)
Calculus: Early Transcendentals (2nd Edition)
Algebra and Trigonometry (6th Edition)
Calculus: Early Transcendentals (2nd Edition)
- For context, the image provided below is a quesion from a Sepetember, 2024 past paper in statistical modelingarrow_forwardFor context, the images attached below (the question and the related figure) is from a january 2024 past paperarrow_forwardFor context, the image attached below is a question from a June 2024 past paper in statisical modelingarrow_forward
- For context, the images attached below are a question from a June, 2024 past paper in statistical modelingarrow_forwardFor context, the images attached below (question and related graph) are from a February 2024 past paper in statistical modelingarrow_forwardFor context, the images attached below are from a February 2024 past paper in statistical modelingarrow_forward
- For context, the image provided below is a question from a September, 2024 past paper in statistical modelingarrow_forwardFor context, the image below is from a January 2024 past paper in statistical modelingarrow_forwardFor context, the image provided below is a question from a September, 2024 past paper in statistical modelingarrow_forward
- Section 2.2 Subsets 71 Exercise Set 2.2 Practice Exercises In Exercises 1-18, write or in each blank so that the resulting statement is true. 1. {1, 2, 5} {1, 2, 3, 4, 5, 6, 7} 2. {2, 3, 7} {1, 2, 3, 4, 5, 6, 7} 3. {-3, 0, 3} {-4,-3,-1, 1, 3, 4} 4. {-4, 0, 4} 5. {Monday, Friday} {-3, -1, 1, 3} {Saturday, Sunday, Monday, Tuesday, Wednesday} 6. {Mercury, Venus, Earth} {Venus, Earth, Mars, Jupiter} 7. {x/x is a cat} {xx is a black cat} {x|x is a pure-bred dog} ibrary mbers, ause the entire sual 8. {xx is a dog} 9. (c, o, n, v, e, r, s, a, t, i, o, n} {v, o, i, c, e, s, r, a, n, t, o, n} 10. [r, e, v, o, l, u, t, i, o, n} {t, o, l, o, v, e, r, u, i, n} 33. A = {x|x E N and 5 < x < 12} B = {x|x E N and 2 ≤ x ≤ 11} A_ B 34. A = {x|x = N and 3 < x < 10} B = A. {x|x = N and 2 ≤ x ≤ 8} B 35. Ø {7, 8, 9,..., 100} 36. Ø _{101, 102, 103, . . ., 200} 37. [7, 8, 9,...} 38. [101, 102, 103, ...} 39. Ø 40. { } { } e In Exercises 41-54, determine whether each statement is true or false. If…arrow_forwardA = 5.8271 ± 0.1497 = B 1.77872 ± 0.01133 C=0.57729 ± 0.00908 1. Find the relative uncertainty of A, B, and C 2. Find A-3 3. Find 7B 4. Find A + B 5. Find A B-B - 6. Find A * B 7. Find C/B 8. Find 3/A 9. Find A 0.3B - 10. Find C/T 11. Find 1/√A 12. Find AB²arrow_forwardWhy charts,graphs,table??? difference between regression and correlation analysis.arrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics 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:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman