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Which the following is an example of a continuous random variable? Waiting time

ID: 3151149 • Letter: W

Question

Which the following is an example of a continuous random variable?

Waiting time at a check-out counter in a supermarket

Outcome of a certain game

The frequency of arrivals at an airport

Number of heart surgeries in a hospital on a particular day

Sunday night attendance at the movies

a.

Waiting time at a check-out counter in a supermarket

b.

Outcome of a certain game

c.

The frequency of arrivals at an airport

d.

Number of heart surgeries in a hospital on a particular day

e.

Sunday night attendance at the movies

Explanation / Answer

Correct Answer: (a) Waiting time at a check-out counter in a supermarket

Since

A continuous random variable is a random variable where the data can take infinitely many values. For example, a random variable measuring the time taken for something to be done is continuous since there are an infinite number of possible times that can be taken

A variable can take on any value between two specified values, it is called a continuous variable;

Suppose the fire department mandates that all fire fighters must weigh between 150 and 250 pounds. The weight of a fire fighter would be an example of a continuous variable; since a fire fighter's weight could take on any value between 150 and 250 pounds.