A consulting firm estimates the following quarterly sales forecasting model:Qt=a+bt+cDThe equation is estimated using quarterly data from 2010-2020/// (-1. 43). The variable D is a dummy variable for the second quarter where:D=1 in the second quarter, and 0 otherwise.The results of the estimation are:DEPENDENT VARIABLE:OBSERVATIONS:VARIABLEINTERCEPTTDMultiple ChoiceOQT R-SQUARE43 0.8644O No, since 1.86 < 2.704No, since 0.55 < 1,86Give the above, at the 1 percent level of significance. Is there a statistically significant trend in sales?No. since 102 <2704Yes, since 1.86 0.55F-RATIO127.5Yes, since 3.38 2.704PARAMETER STANDARDESTIMATE22.501.862.00ERROR9.320.550.71P-VALUE ON F0.0001T-RATIO P-VALUE2.410.02013.380.00162.820.0075

Given a consulting firm estimates the quarterly sales forecasting model:

Answered: A consulting firm estimates the…

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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Please don't provide handwritten solution ....
Prehistoric pottery vessels are usually found as sherds (broken pieces) and are carefully reconstructed if enough sherds can be found. An archaeological study provides data relating x = body diameter in centimeters and y = height in centimeters of prehistoric vessels reconstructed from sherds found at a prehistoric site. The following Minitab printout provides an analysis of the data. Predictor Сoef SE Coef T P Constant -0.209 2.429 -0.09 0.929 Diameter 0.7689 0.1471 5.66 0.002 S 4.07980 R-Sq 88.9% %3D For the least-squares line ŷ = a + bx, what is the value of the constant a? What is the value of the slope b? (ote: The slope is the coefficient of the predictor variable.) Write the equation of the least-squares line. a = b = + The P-value for a two-tailed test corresponding to each coefficient is listed under P. The t value corresponding to the coefficient is listed under T. What is the P-value of the slope? Recall that the t value and resulting P-value of the slope b equal thet value…
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