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# QNT 275 Week 3 Quiz

QNT 275 Week 3 Quiz -

1

The sampling error is:

• the difference between the value of a sample statistic and the value of the corresponding population parameter
• an error that occurs during collection, recording, and tabulation of data
• an error that occurs when a sample of 30 or more members is drawn
• an error that occurs when a sample of fewer than 30 members is drawn

2

The population distribution is the probability distribution of the:

• population means
• population probabilities
• population data
• whole population of a country

3

Which of the following is not a characteristic of the normal distribution?

• The two tails of the curve extend indefinitely
• The curve is symmetric about the mean
• The total area under the curve is 1.0
• The value of the mean is always greater than the value of the standard deviation

4

The units of an F distribution:

• are always negative
• are always positive
• can be negative, zero, or positive
• are always nonnegative

5

To use an F distribution, the random variable must be:

• a qualitative random variable
• a continuous random variable
• either a discrete or a continuous random variable
• a discrete random variable

6

A continuous random variable is a random variable that can:

• assume only a countable set of values
• assume no continuous random frequency
• assume any value in one or more intervals
• have no random sample