The Manager of a Fast Food Restaurant Is Investigating the Average

question 101

Essay

The manager of a fast food restaurant is investigating the average number of fries per Large-sized offered to customers, to assess quality control. The manager took a random sample of five Large-sized orders of fries, and counted the number of fries per serve, with the results given below: $\begin{array}{|r|r|r|r|r|}\hline73&75&83&68&78\\\hline\end{array}$ Assume that the number of French fries served at this fast food restaurant is normally distributed. Can we infer at the 5% significance level that the average number of fries served in a Large-sized order of fries at this fast food restaurant is over 70?

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Definitions:

Cystoscopy

A medical procedure using a cystoscope to examine the bladder and urethra for abnormalities.

Malignant Tumor

A cancerous growth capable of invading nearby tissues and metastasizing to distant parts of the body.

Spreading

The act of extending, distributing, or dispersing something over an area or period of time.

Physician

A medical professional qualified to practice medicine aimed at diagnosing, treating, and preventing illness and injury.