Use the Data Given Below to Answer the Following Question(s)

question 79

Multiple Choice

Use the data given below to answer the following question(s) .
In an FCFS single server queuing discipline,the mean arrival rate is 12 customers/minute and the mean service rate is 14.5 customers/minute.
-Calculate the average number of customers in the queue.

• A)0.17
• B)0.40
• C)4.80
• D)3.97

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Definitions:

Chi-square Statistic

A statistic that measures the difference between observed counts and counts expected under a specific hypothesis, used in tests of independence and goodness-of-fit.

Binomial Proportions

The probabilities of outcomes for a binomial distribution, which describes the number of successes in a fixed number of binary experiments.

Two-tail Test

A statistical hypothesis test in which the area of interest, or rejection region, is in both tails of the probability distribution, used to determine if there is a significant difference in either direction.

Z-test

A statistical test used to determine if there is a significant difference between sample and population means under the assumption of a normal distribution.