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

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

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

The units of an F distribution:

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

A continuous random variable is a random variable that can:

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