I an Estimate of the Population Mean Based on a Large

question 59

Multiple Choice

i. An estimate of the population mean based on a large sample is less reliable than an estimate made using a small sample.
Ii) The standard error of the mean will vary according to the size of the sample that is in the denominator. As the sample size n gets larger, the variability of the sample means gets smaller.
Iii) To determine the value of the standard error of the mean, the total error is divided by the sample size.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) is a correct statement, but not (ii) or (iii).
• C) (ii) is a correct statement, but not (i) or (iii).
• D) (ii) and (iii) are correct statements but not (i).
• E) All statements are false

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Definitions:

Utilization Factor

A measure of how much of a system's capacity is being used compared to its total capacity.

Average Queue Length

The average number of items or people waiting in line to be processed or served over a specific period.

Negative Exponential

A statistical distribution used to model time between independent events that occur continuously at a constant average rate.

Service Times

The duration a customer has to wait before receiving a service or the time taken to deliver a service.