The Number of Calls Coming into a Call Center Follows

question 38

Multiple Choice

The number of calls coming into a call center follows a Poisson distribution with a mean of 120 calls per hour. What is the probability of no calls in a one-minute interval?

• A) 0
• B) .1353
• C) .4060
• D) .3679

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Definitions:

Population Parameter

A numerical value that describes a characteristic of an entire population, such as its mean or standard deviation.

Sample Statistic

A numerical measure that describes some characteristic of a sample, such as the sample mean or sample standard deviation.

50th Percentile

Also known as the median, it is the value below which 50% of the observations in a group of data fall.

N - 1

A formula used to calculate the sample variance or sample standard deviation, representing the sample size minus one.