Recently,a Department Store Chain Was Interested in Determining If There

question 113

Multiple Choice

Recently,a department store chain was interested in determining if there was a difference in the mean number of customers who enter the three stores in Seattle.The analysts set up a study in which the number of people entering the stores was counted depending on whether the day of the week was Saturday,Sunday,or a weekday.The following data were collected: Given this format and testing using an alpha level equal to 0.05,which of the following statements is true?

• A)The total degrees of freedom is 9.
• B)The between blocks degrees of freedom equals 8.
• C)The between samples degrees of freedom equals 3.
• D)The within sample degrees of freedom equals 4.

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Definitions:

Regression Line

A statistical tool represented as a line on a graph that best fits the data points, showing the relationship between two variables.

Profits

The financial gain obtained when the revenues from business activities exceed the expenses, costs, and taxes associated with the operation.

Exponential Smoothing

A time series forecasting method for smoothing data points by assigning exponentially decreasing weights over time.

Trend Adjustment

A statistical technique used to correct or adjust data to account for systematic patterns or trends over time, improving the accuracy of forecasts.