The Manager of a Video Library Would Like the Variance

question 39

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.Which of the following would be null and the alternate hypothesis to test if the cut-off is surpassed?

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Definitions:

Force Exerted

The interaction that causes a change in the motion of an object, quantified by Newton's laws.

Arterial Blood Pressure

The pressure exerted by circulating blood upon the walls of blood vessels, specifically within arteries, crucial for maintaining blood flow through the body.

Smooth Muscle

Type of muscle found in the walls of internal organs such as the stomach, intestines, and blood vessels, functioning involuntarily.

Arteries

Blood vessels that carry oxygen-rich blood away from the heart to various parts of the body.