B4. A company has collected and smoothened its historical yearly sales data of a product from2015 up to 2021. The following table shows the sales and moving average figures.SalesThree-year movingavcrageYearFive-ycar movingavcrage(S thousands)20152016326.0324.0E367.42017344.02018383.0371.02019B.389.02020398.0D2021428.0Calculate the missing values of4, B, C, D. E and F(Correct to I decimal place).B5. A lottery consists of 49 balls numbered 1 through 49 and 6 of them are drawn at random.(a) You can pick 6 different numbers for a betting ticket. How many selections are possible?(b) If prizes will be paid to those picking 4 to 6 drawn numbers, how many winning selectionsare possible?ర

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Provide an appropriate chart for the following data
A small detergent company in Karachi is confident that their sales are growing significantly week by week. Treating sales for the previous eight weeks as a typical example of this increasing trend, they recorded them in PKR 1000's and examined the results. Week 1 2 3 4 5 6 Sales (in PKR) 2.59 2.55 2.63 2.68 2.74 2.83 2.86 2.99 a) Plot a scatter diagram between week and sales. b) Find the equation of regression line. c) Find the expected sales for 12 week d) Find the correlation coefficient between the two variables.
In the area of Russia récords were kept on the relationship between the rain Fall in inches and the yield of wheat (bushels per acre ).the data for a 9 year period is as follow. Rain fall x 13.1,11.4,16.0,15.1,21.4,12.9,9.6,18.2,18.6. yield y : 48.5,44.2,56.8,80.4,47.2,29.9,74.0,74.0,76.8 the equation of the line of least squares is given as ^y= -9.12+4.38x. How many bushels of wheat peen acre can be predicted if it’s is expected that there will be 30 inches of rain?
Amex PLC has gathered following information on the sales of face mask from April 2020 to September 2020. You are required to; Using linear trend equation forecast the sales of face masks for October 2020. Calculate the forecasted sales difference if you use 3-period weighted moving average designed with the following weights: July 0.2, August 0.3 and September 0.5. Month Sales ($) April 17,000 May 18,000 June 19,500 July 22,000 August 21,000 September 23,000
Illustration 70. Using three yearly moving averages, determine the trend and short term fluctuations. Year : 1989 1990 1991 | 1992 | 1993 1994 1995 | 1996 1997 1998 Prodn. (in '000 tonns) : 21 22 23|| 25 24 22 25 26 27 26
The owner of Showtime Movie Theaters, Inc., would lke to predict weekly gross revenue as a function of advertising expenditures Historical data for a sample of eight wecks follow Weekly Gross Revenue ($1,000s) Television Advertising ($1,000s) Newspaper Advertising ($1,000s) 96 5.0 1.5 90 2.0 2.0 95 4.0 1.5 92 2.5 2.5 95 3.0 3.3 94 3.5 2.3 94 2.5 4.2 94 3.0 2.5 The owner then used multiple regression analysis to predict gross revenue (y), in thousands of dollars, as a function of television advertising (x), in thousands of dolars, and newspaper advertising (x,), in thousands of dollars. The estimated regression equation was = 83.2 + 2.29x, + 1.30x. (a) What is the gross revenue (in dollars) expected for a week when $5,000 is spent on television advertising (x5) and $1,500 is spent on newspaper advertising (, 1.5)? (Round your answer to the nearest dollar.) $06600 (b) Provide a 95% confidence interval (in dolars) for the mean revenue of all weeks with the expenditures listed in part (a).…
Compute 3-yearly moving averages of the following data assuming the length Of business cycle as 3 year period and plot the trend va year Annual sales in $ '000 1990 40 1991 42 1590 46 1993 44 1994 49 1995 46 1996 42 1997 44 1998 50
am. 13.

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