The Following Data, Drawn from a Normal Population, Are the Waiting

question 35

Essay

The following data, drawn from a normal population, are the waiting times (in minutes) of 12 randomly selected customers at a travel desk.
1.8 2.4 2.7 2.1 1.3 1.7 1.5 1.5 2.3 2.8 2.5 1.9
A) Calculate the point estimates of the population variance and the population standard deviation.
B) Compute a 90% confidence intervals for the population variance and the population standard deviation.

• A) Calculate the point estimates of the population variance and the population standard deviation.
• B) Compute a 90% confidence intervals for the population variance and the population standard deviation.

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Definitions:

Pertussis

A highly contagious bacterial disease also known as whooping cough, characterized by severe coughing spells.

Immunization

Becoming immune or the process of rendering a patient immune.

Vaccine

Any substance for prevention of a disease.

Artificial Immunity

Immunity acquired through medical interventions, such as vaccinations, as opposed to natural immunity obtained through exposure to pathogens.