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QNT 275 Week 3 Quiz

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

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