Fast Food
the General Manager of a Chain of Fast

question 51

Short Answer

Fast Food
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. $$\begin{array} { | l | c | c | } \hline { \text { Day } } & \begin{array} { c } \text { Sales During } \\\text { Campaign }\end{array} & \begin{array} { c } \text { Sales After } \\\text { Campaign }\end{array} \\\hline \text { Sunday } & 18.1 & 16.6 \\\text { Monday } & 10.0 & 8.8 \\\text { Tuesday } & 9.1 & 8.6 \\\text { Wednesday } & 8.4 & 8.3 \\\text { Thursday } & 10.8 & 10.1 \\\text { Friday } & 13.1 & 12.3 \\\text { Saturday } & 20.8 & 18.9 \\\hline\end{array}$$
-Estimate with 95% confidence the mean difference.

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Definitions:

Language Development

How children learn to understand and express language during their early developmental stages.

Positive Instances

Situations or examples that support or confirm a hypothesis or idea, especially those that result in positive outcomes or achievements.

Hypermorphs

Genetic mutations that result in an increased function of the gene product, which can lead to developmental or physiological abnormalities.

Hypomorphs

Refer to genetic variants that result in decreased gene function compared to the wild type.