QUESTION THREEThe following table shows, for eight vintages of select wine, purchases per buyer (y) and thebuyer's rating in a year (x):X3.63.23.16.04.12.53.05.1Y2022231728252028(a) Estimate the regression of purchases per buyer on the buyer's rating.(b) Interpret the slope of the estimated(c) Find and interpret the coefficient of determination(d) Find and interpret a 90%, confidence interval for the slope of the population regression line.(e) Find a 90% confidence interval for expected purchases per buyer for a vintage for which thebuyer a rating is 2.0.(f) Test at 5% level of significance whether there is a significant linear between purchases perbuyer and the buyer's rating.

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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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Use the scatterplot of Vehicle Registrations below to answer the questions Vehicle Registrations in the United States, 1925- 2011 Vehicles millions 300 y = 3.0161x - 5819.5 R? = 0.9695 250 200 150 100 50 1920 -50 1940 1960 1980 2000 2020 Year Write a sentence explaining the value of the slope for this regression line. For every increase in year, the number of vehicle registrations in the US increases by 3.0161 million. For every increase in year, the number of vehicle registrations in the US increases by 5819.5. For every increase in vehicle registrations in the US, the number of years increases by 5819.5. For every increase in vehicle registrations in the US, the number of years increases by 3.0161 million. Registrations (in millions)
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