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b. Compute the seasonal indexes for the four quarters (to 3 decimals).
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- The annual revenue of Amazon is given in the table below (sourceLinks to an external site.). Year Amazon Annual Revenue(Billions of US dollars) 2020 386.064 2019 280.522 2018 232.887 2017 177.866 2016 135.987 2015 107.006 2014 88.988 2013 74.452 2012 61.093 2011 48.077 2010 34.204 In what year will the estimated revenue of Amazon be 1,357 billion US dollars? Note: I am asking for the year, not the number of years since 2010. This may happen between two years. Round to the nearest year.Import Illinois.xls as a table. Using logical indexing to select the years with more than 2800 cases of Diabetes. Then plot all of the data on the same axis. F1 fx Homicide B C E Year Accidents Cancer Diabetes Heart Disease Homicide| Suicide 1999 4125 25024 3004 33387 1023 1020 3 2000 4041 25365 2995 31844 991 1003 4. 2001 4077 24778 3092 30990 1087 1139 2002 4222 24737 3011 30821 1016 1145 2003 3942 24464 3044 29816 966 1011 7. 2004 4133 24289 3069 28284 871 1028 8. 2005 4182 24250 3034 28226 866 1086 9. 2006 4451 24084 2795 27007 865 1010 10 2007 4367 24115 2851 25813 863 1108 11 2008 4218 24300 2846 26078 872 1198 12 2009 3961 24185 2741 24931 881 1177 13 2010 3997 24070 2507 24959 783 1178 14 2011 4166 24007 2693 24987 812 1226 15 2012 4488 24562 2706 24667 832 1292 16 2013 4511 24491 2798 17 24839 792 1321 2014 4644 24501 2712 18 25024 792 1398 2015 4850 24713 2817 25652 19 863 1363 20 21JOYFUL Fashion Company is reviewing the monthly sales in year 2021. The monthly sales (in millions) of each month were as below: Jan: $2.2 Jul: $3.4 Feb: $2.5 Aug: $3.7 Mar: $2.0 Sep: $2.1 Apr: $2.8 Oct: $2.5 Мay: $1.9 Nov: $2.3 Jun: $0.9 Dec: $4.6 (d) It is known that the average monthly sales from Jul 2020 to Dec 2020 were $1.9 millions. Find the average monthly sales from July 2020 to Dec 2021. (e) Are the JOYFUL Fashion Company sales increasing / decreasing? Explain your answer by comparing the half-yearly average monthly sales. (i.e. Jul 2020 to Dec 2020; Jan 2021 to Jun 2021; Jul 2021 to Dec 2021)
- JOYFUL Fashion Company is reviewing the monthly sales in year 2021. The monthly sales (in millions) of each month were as below: Jan: $2.2 Jul: $3.4 Feb: $2.5 Aug: $3.7 Mar: $2.0 Sep: $2.1 Apr: $2.8 Oct: $2.5 Мay: $1.9 Nov: $2.3 Jun: $0.9 Dec: $4.6 (a) Find the mean, mode, standard deviation, and range of the above data. (b) Comment on the skewness of the above data. Explain your answer with the comparison of quartiles. The JOYFUL Fashion Company will issue a Gold Membership to customers with accumulated spending in January 2022 over 1% of 2021's average monthly sales and a Platinum Membership to customers with accumulated spending in January 2022 over 1% of the 80th percentile of 2021's monthly sales. (c) Mrs. Robinson has spent $27,450 in January 2022. Will she be qualified for the Gold Membership? Will she be qualified for the Platinum Membership? Explain your answers. (d) It is known that the average monthly sales from Jul 2020 to Dec 2020 were $1.9 millions. Find the average…Year Quarter Price 2010 1 263600 2010 2 264100 2010 3 259500 2010 4 248900 2011 1 251400 2011 2 259200 2011 3 251400 2011 4 252000 2012 1 272300 2012 2 258600 2012 3 265500 2012 4 291200 2013 1 290500 2013 2 302400 2013 3 322900 2013 4 331000 2014 1 324700 2014 2 344400 2014 3 327500 2014 4 355400 2015 1 347200 2015 2 341000 2015 3 330800 2015 4 370300 2016 1 350800 2016 2 380000 2016 3 368600 2016 4 371100 2017 1 372500 2017 2 386300 2017 3 385500 2017 4 409700 2018 1 408000 2018 2 423400 2018 3 404300 Predictive Analytics: Time-Series Forecasting: The above contains data on median home prices in the West Census region quarterly from 2010 to2018. Easter Realtor, Inc. is interested in houses in this region. They want to use this data toforecast home price in the fourth quarter of 2018. For cross-validation, use the training set fromthe first quarter of 2010 to the fourth quarter in 2016, and use a validation set…(b) Estimate the standard errors of the slope and intercept. Round your answer to three decimal places (e.g. 98.765) se B, Round your answer to two decimal places (e.g. 98.76) se(bo ) = I (c) Test the hypothesis Ho: B1 = 10 versus H1:ß1 + 10using a = 0.01. v Họ and conclude the slope 10 at a = 0.01. (d) Test the hypothesis Ho: Bo = 0 versus H1: Bo # 0 using a = 0.01. Họ and conclude that the intercept v be included in the model.
- Annualized percentage return on investment (as compared to the Standard & Poor's 500 Index) for 10 randomly selected stock screeners are reproduced in the table. Complete parts a through c.Hudson Marine provides boats sales, service, and maintenance. Boat trailers are one of its top sales items. Suppose the quarterly sales values for the seven years of historical data are as follows. Do not round intermediate calculations. Year Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total YearlySales 1 8 14 10 3 35 2 9 19 13 5 46 3 16 26 22 13 77 4 17 26 24 16 83 5 21 33 29 19 102 6 25 34 31 22 112 7 26 41 35 29 131 c. Compute the seasonal indexes for the four quarters (to 3 decimals). Quarter Adjusted Seasonal Index 1 2 3 4The table below contains real data for the first two decades of AIDS reporting. Year # AIDS cases diagnosed # AIDS deaths Pre-1981 91 29 1981 319 121 1982 1,170 453 1983 3,076 1,482 1984 6,240 3,466 1985 11,776 6,878 1986 19,032 11,987 1987 28,564 16,162 1988 35,447 20,868 1989 42,674 27,591 1990 48,634 31,335 1991 59,660 36,560 1992 78,530 41,055 1993 78,834 44,730 1994 71,874 49,095 1995 68,505 49,456 1996 59,347 38,510 1997 47,149 20,736 1998 38,393 19,005 1999 25,174 18,454 2000 25,522 17,347 2001 25,643 17,402 2002 26,464 16,371 Total 802,118 489,093 Graph "year" versus "# AIDS cases diagnosed" (plot the scatter plot). Do not include pre-1981 data. Perform linear regression. Write the equations. (Round your answers to the nearest whole number. Round r to four decimal places.) (a) Linear Equation: 9 - (b) a = (c) b= (d) (e) n-
- The total amount of consumer credit has been increasing steadily in recent years. The following table gives the total outstanding consumer credit (in billions of dollars). Answer parts (a) through (e) below. Year 2004 2005 2006 2007 2008 Consumer Credit 2210.5 2303.8 2437.0 2517.9 2595.1 Year 2009 2010 2011 2012 2013 Consumer Credit 2557.5 2648.1 2756.0 2926.3 3099.2 a. Find an equation for the least squares line, letting x equal the number of years since 2000. The equation is Y=x+0. (Use integers or decimals for any numbers in the equation. Round to two decimal places as needed.)The following data are the last three years of quarterly sales ($ thousands) for AmeriWeld. They are looking to forecast their sales for the upcoming year, 2021. Quarter 2018 Q1 Sales $ thousands (y) 15 1 Q2 2 14 Q3 3. 13 Q4 37 2019 Q1 Q2 Q3 Q4 2020 Q1 54 6 34 7 67 73 77 8 9 10 Q2 Q3 Q4 62 11 94 12 101 Click here for the Excel Data File. Data file should open in a new browswer window. Select "File" then "Save As" to download the file to your computer and be able to use it in Excel. a. Determine the regression equation. Regression equation: ŷ = (Round to 2 decimal places.) b. Determine the specific index for each quarter. 2 decimal places.) (Indexes should be in decimal form (e.g. 1.36 not 136). Rounded to Quarter Quarterly Index Q1 Q2 Q3 Q4 c. What are the estimated sales (forecast) for the next four quarters? (Values in $thousands. Round to 2 decimal places.) Quarter Forecasted Sales 2021-1 2021-2 2021-3 2021-3
