# Question

Samples of four salespeople from each of four regions were asked to predict percentage increases in sales volume for their territories in the next 12 months. The predictions are shown in the accompanying table.

a. Prepare the analysis of variance table.

b. Test the null hypothesis that the four population mean sales growth predictions are equal.

a. Prepare the analysis of variance table.

b. Test the null hypothesis that the four population mean sales growth predictions are equal.

## Answer to relevant Questions

The data file Housing Starts shows private housing units started per thousand of population in the United States over a period of 24 years. Use a computer to prepare a time plot of this series and comment on the components ...The data file Earnings per Share shows earnings per share of a corporation over a period of 18 years. a. Using smoothing constants a = 0.8, 0.6, 0.4, and 0.2, find forecasts based on simple exponential smoothing. b. Which of ...The data file Profit Margins shows percentages of profit margins of a corporation over a period of 11 years. Obtain forecasts for the next 2 years, using the Holt-Winters method with smoothing constants α = 0.4 and β = ...For a certain product it was found that annual sales volume could be well described by a third-order autoregressive model. The estimated model obtained was as follows: xt = 202 + 1.10xt-1 – 0.48xt-2 + 0.17xt-3 + εt For ...The data file Fargo Electronics Sales shows quarterly sales of a corporation over a period of 6 years. a. Draw a time plot of this series and discuss its features. b. Use the seasonal-index method to seasonally adjust this ...Post your question

0