Dumplings -To-Go (DTG)provides Take-Out Dumplings and Noodle Dishes to Customers

question 72

Multiple Choice

Dumplings -To-Go (DTG) provides take-out dumplings and noodle dishes to customers at its chain of drive-through restaurants.The target for a customer's waiting time is 3.0 minutes +/- 1 minute.Each month,one of the managers observes the drive-through process and collects a sample of 4 waiting times a day over a 6 day period.The data from one restaurant appears below.If DTG were to construct an R-chart from this data,the 3-sigma LCL would be

• A)2.82
• B)1.41
• C)0.00
• D)−1.41

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Definitions:

Upper Limit

The upper limit refers to the highest value or boundary that a certain data range, interval, or measurement can reach.

Random Variable

A variable whose outcomes are determined by a random phenomenon, used in probability and statistical analysis.

Normal Distribution

A harmonized distribution of probability about the mean, portraying that near-mean occurrences are more common than those far from the mean.

Sales

The activities related to selling goods or services and the amount of goods or services sold within a given period.