You are given below the following information about advertising and sales.Adv. Exp. (X)(S Lakhs)Sales (Y)Lakhs)Мean1090S.D.312Correlation Coefficient 0.8(a) Calculate the two regression lines.(b) Find the likely sales when advertisement expenditure is(c) What should be the advertisement expenditure if the company wants to attain a sales target of15 lakhs.120 lakhs ?

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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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The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends upon many factors, including the model year, mileage, and condition. To investigate the relationship between the car's mileage and the sales price for a 2007 model year Camry, the following data show the mileage and sale price for 19 sales (PriceHub website). Click on the datafile logo to reference the data. DATA file 1. 18 Price ($1000s) 16 14 12 10 18 6 If your answer is zero, enter "0". a. Select a scatter diagram with the car mileage on the horizontal axis and the price on the vertical axis. 20 40 6,0 8,0 100 Miles (1000s) 120 223 +♡ ♡ Miles(1000s) 29 36 47 63 77 73 87 92 101 110 28 59 68 68 91 42 65 110 Price ($1000s) 16.2 16.0 13.8 11.5 12.5 12.9 11.2 13.0 11.8 10.8 8.3 12.5 11.1 15.0 12.2 13.0 15.6 12.7 8.3
Can you please help with 4.30 sulfur, the ocean and the sun? Only part A which is make a scatter plot that shows how DMS responds to SRD.
13/
discuss how the coefficient of determination and the coefficient of correlation are related and how you would use them in regression analysis
For half-life demonstration, plot ln(half-lives) in the x-axis vs ln(no. of “tails-up” coins) in the y-axis. Perform linear regression to obtain the value of the slope, the value of the y-intercept, and the correlation coefficient r. What is the significance of these values?
i submitted a picture of the question
A local church had a "drive by food drive" on Easter Sunday, where anyone could drive by and drop off non-perishable food items for local food pantries. Usually the quantity averages 5.1 pounds per donation with a standard deviation of sigma = 1 pounds. This year, they checked 57 of the donations and found the average was x-bar = 8 pounds of food donated per person. They want to see if this is significantly different from the usual amount. What is the standard error of the mean? Round your answer to three decimal places.
(15) 5. (TRUE, FALSE) In regression, the coefficient of determination gives the proportion of the variability in the dependent variable that is explained by the regression equation.
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