Walmart RevenueThe annual revenue of Walmart is given in the table below (source ).Walmart AnnualRevenue(Billions of US dollars)559.151Year20212020201920182017201620152014201320122011201020092008200720062005523.964514.405500.343485.873482.130485.651476.294468.651446.509421.849408.085404.254377.023348.368312.101284.310Apply linear regression to the data in the table to find a modely = mx + b,where y is Walmart's annual revenue in billions of US dollars, and a is the number of years since2000.Use the model y = mx + b with m rounded to the nearest tenth and 6 rounded to the nearest The value * = -3 should be used in the model to predict the revenue of Walmart in what year?

Given: A table of data. To Do:Applying linear regression to the given data in the table we have to…

Answered: Walmart Revenue The annual revenue of…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Wines of South Africa provide a complete range of white wines, red wines and dessert wines. The table below gives the quantity sold as well as the price for 2010 and 2014. Use 2010 as the base year. Calculate the single price index of red wine. Round off to two decimals. 2010 2014 Wine Type Quantity Sold Price (in R) Quantity Sold Price (in R) Red 500 R30 400 R70 White 2500 R20 4000 R15 Dessert 2000 R50 1000 R60 O A. 125.00% O B. 233.33% O C. 42.86% O D. 80.00%
Repair Time in Hours Months Since Last Service Type of Repair Repairperson 2.9 2 Electrical Donna Newton 3.0 6 Mechanical Donna Newton 4.8 8 Electrical Bob Jones 1.8 3 Mechanical Donna Newton 2.9 2 Electrical Donna Newton 4.9 7 Electrical Bob Jones 4.2 9 Mechanical Bob Jones 4.8 8 Mechanical Bob Jones 4.4 4 Electrical Bob Jones 4.5 6 Electrical Donna Newton 2.9 2 Electrical Donna Newton 3.0 6 Mechanical Donna Newton 4.8 8 Mechanical Donna Newton 1.8 3 Mechanical Donna Newton 2.9 2 Electrical Donna Newton 4.9 7 Electrical Bob Jones 4.2 9 Electrical Bob Jones 4.8 8 Mechanical Bob Jones 4.4 4 Electrical Bob Jones 4.5 6 Electrical Donna Newton Develop the simple linear regression equation to predict repair time given the number of months since the last maintenance service, and use the results to test the hypothesis that no relationship exists between repair time and the number of months since the last maintenance service at the 0.05 level of…
Suppose that 7.3, 6.1, 3.8, 8.4, 6.9, 7.1, 5.3, 8.2, 4.9, and 5.8 are ten observations from a normal distribution with unknown mean and unknown variance. What is the half width for the 95% confidence interval for the population mean? (Hint: refer to page 36.) Here is a t table that contains what you will need (and more).
Wines of South Africa provide a complete range of white wines, red wines and dessert wines. The table below gives the quantity sold as well as the price for 2010 and 2014. Use 2010 as the base year. Calculate the single price index of red wine. Round off to two decimals. 2010 2014 Wine Type Quantity Sold Price (in R) Quantity Sold Price (in R) Red 500 R30 400 R70 White 2500 R20 4000 R15 Dessert 2000 R50 1000 R60 A. 42.86% B. 233.33% C. 80.00% D. 125.00%
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The table below shows total expenditures for colleges and universities in millions of dollars. All data are in current dollars. Estimate expenditures in 2015.
Price (cents) 59 59 59 59 59 79 59 79 79 79 79 79 99 99 99 99 99 99 Promotional expenses 200 200 400 400 600 200 500 200 200 400 800 600 200 400 200 400 800 600 Sales number 3842 3519 4630 3754 5120 1916 5015 3636 2295 2618 4113 3532 1096 2088 2114 2159 3354 2927 What is the standard error estimate State H0 and H1 What’s the p value Did you reject H0
Gas price per gallon ($) City Price of a dozen eggs ($) Orlando 2.67 0.91 Chicago 2.74 0.96 Los Angeles 2.8 1.38 Minneapolis 2.87 1.4 Tucson 2.9 1.44 Portland 3.09 1.72 Kansas City 3.12 1.76 Pittsburgh 3.37 1.81 Philadelphia 3.4 1.88 Seattle 3.72 1.91
Price($) W Price ($) A $3.98 $3.99 $2.28 $3.49 $3.08 $5.29 $0.58 $0.60 $2.00 $1.77 $8.98 $10.49 $3.94 $3.99 $3.50 $5.49 $1.50 $0.99 $2.18 $2.29 $3.88 $3.19 $2.78 $2.99 $2.12 $1.00 $0.88 $0.59 $2.64 $2.79 $0.98 $1.99 $0.98 $1.00 $0.75 $1.00 $0.28 $0.29 $2.98 $3.99 $2.82 $2.79 $0.94 $1.19 $1.47 $1.25 $5.48 $4.99 $3.98 $3.99 $3.48 $3.79 $1.08 $1.89 $1.08 $1.00 $1.00 $1.50 $0.58 $0.50 Trying to determine if A is more expenive than W. Test Your Claim for Using a 2 Sample Hypothesis Test with a 5% Level of Significance. 1. Define µ1 and µ2 2. Determine the null and alternate hypothesis and identify the claim. 3. Using technology find the test statistic and interpret it. 4. Make a decision of rejecting or failing to reject the null hypothesis. You can use the Classical Approach (using critical values) or the P-value Approach but you must thoroughly explain which method you used and walk me through your steps. 5. State your…
DATA file Autoinsurance 20. Assignment 3 The average annual premium for automobile insurance in the United States is $1503 (Insure.com website, March 6, 2014). The following annual premiums ($) are representa- tive of the website's findings for the state of Michigan. 1905 2725 2677 2600 2962 2184 2332 3112 2545 2525 2370 2545 2529 2442 2312 2981 2627 2857 2675 2115 Assume the population is approximately normal. a. Provide a point estimate of the mean annual automobile insurance premium in Michigan. b. Develop a 95% confidence interval for the mean annual automobile insurance pre- mium in Michigan. C. Does the 95% confidence interval for the annual automobile insurance premium in Michigan include the national average for the United States? What is your interpreta- tion of the relationship between auto insurance premiums in Michigan and the national average?
Walmart Revenue The annual revenue of Walmart is given in the table below (source ). Walmart Annual Revenue (Billions of US dollars) 559.151 Year 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 523.964 514.405 500.343 485.873 482.130 485.651 476.294 468.651 446.509 421.849 408.085 404.254 377.023 348.368 312.101 284.310 Apply linear regression to the data in the table to find a model y = mx + b, where y is Walmart's annual revenue in billions of US dollars, and a is the number of years since 2000. Use the model y = mx + b with m rounded to the nearest tenth and 6 rounded to the nearest
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