The General Manager of a Chain of Fast Food Chicken

question 36

Short Answer

The general manager of a chain of fast food chicken restaurants wants to determine how effective their promotional campaigns are. In these campaigns "20% off" coupons are widely distributed. These coupons are only valid for one week. To examine their effectiveness, the executive records the daily gross sales (in $1,000s) in one restaurant during the campaign and during the week after the campaign ends. The data is shown below. Can they infer at the 5% significance level that sales increase during the campaign?
Use the Data Analysis software if you prefer.
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: __________________________________________
Estimate with 95% confidence the mean difference.
______________

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Definitions:

Iron Byron

A mechanical device used to test and simulate the human swing in the sport of golf.

ANOVA

Short for Analysis of Variance, a statistical method used to compare the means of three or more samples to understand if at least one sample mean significantly differs from the others.

MST

Minimum Spanning Tree, a concept in graph theory representing the subset of edges that connects all vertices in a graph with the minimum possible total edge weight.

MSE

Mean Squared Error, a measure used in statistics to quantify the difference between values predicted by a model and the values actually observed from the environment that is being modeled.