On the Average, 1

question 24

Multiple Choice

On the average, 1.8 customers per minute arrive at any one of the checkout counters of a grocery store. What type of probability distribution can be used to find out the probability that there will be no customer arriving at a checkout counter?

• A) Poisson distribution
• B) hypergeometric distribution
• C) binomial distribution
• D) none of the above

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Definitions:

Independent Variable

A factor or condition that is manipulated by the researcher to observe its effect on the dependent variable in an experiment.

Combinations

The selection of items from a larger set such that the order of selection does not matter.

Levels

Refers to the different values or categories of a variable in a study or analysis.

Degrees Of Freedom

The number of values in a statistical calculation that are free to vary for the purpose of estimating a parameter or fitting a model.