The Manager of a Video Library Would Like the Variance

question 6

Multiple Choice

The manager of a video library would like the variance of the waiting times of the customers not to exceed 2.30 minutes-squared.He would like to add an additional billing counter if the variance exceeds the cut-off.He checks the recent sample data.For a random sample of 24 customer waiting times,he arrives at a sample variance of 3.8 minutes-squared.The manager assumes the waiting times to be normally distributed.At α = 0.05,which of the following is the critical value ?

• A) 13.091
• B) 32.007
• C) 35.172
• D) 38.076

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Definitions:

Teams

Groups of individuals working together to achieve a common goal, often characterized by shared responsibilities and collaboration.

Variance

A measure of how much values in a data set deviate from the mean value.

Data

Information collected for reference or analysis, often numerical.

Squared Deviation

The squared differences between each observation and the mean, used as part of the calculation for variance.