The department of commerce for a country released the data below for the quarterly retail e-commerce sales in millions of dollars for 2008 and 2009. Complete parts a through c. Year O 2008 1 Quarter 4 2009 1 3910 3 2 3 2002 3044 3158 3824 4 2 4728 Sales 5358 5428 CHE a. Produce a time-series plot of this data. Indicate the time-series components that exist in the data. OA. B. OC. Sales Q 8000 8000- ||||||| Sales ‒‒‒‒‒‒‒ ****** THING IPULA ++ •||||||| 8000 T WHHHHHH HETHEM ||||||| Q ******* G G |||||||| +||||| "d Indicate the time-series components that exist in the data. Select all that apply. A. A strong upward linear trend B. A strong downward linear trend C. A strong downward nonlinear curve D. A strong upward nonlinear curve E. The data appear to be constant. b. Conduct a test of hypothesis to determine if there exists a linear trend in these data. Use a significance level of 0.10 and the p-value approach. What are the hypotheses? Ho: The slope of the regression line is equal to zero. HA: The slope of the regression line is not equal to zero. What is the test statistic? (Round to three decimal places as needed.) Q G O D. 8000 Sales *
The department of commerce for a country released the data below for the quarterly retail e-commerce sales in millions of dollars for 2008 and 2009. Complete parts a through c. Year O 2008 1 Quarter 4 2009 1 3910 3 2 3 2002 3044 3158 3824 4 2 4728 Sales 5358 5428 CHE a. Produce a time-series plot of this data. Indicate the time-series components that exist in the data. OA. B. OC. Sales Q 8000 8000- ||||||| Sales ‒‒‒‒‒‒‒ ****** THING IPULA ++ •||||||| 8000 T WHHHHHH HETHEM ||||||| Q ******* G G |||||||| +||||| "d Indicate the time-series components that exist in the data. Select all that apply. A. A strong upward linear trend B. A strong downward linear trend C. A strong downward nonlinear curve D. A strong upward nonlinear curve E. The data appear to be constant. b. Conduct a test of hypothesis to determine if there exists a linear trend in these data. Use a significance level of 0.10 and the p-value approach. What are the hypotheses? Ho: The slope of the regression line is equal to zero. HA: The slope of the regression line is not equal to zero. What is the test statistic? (Round to three decimal places as needed.) Q G O D. 8000 Sales *
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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