In Testing a Population Variance or Constructing a Confidence Interval

question 46

Multiple Choice

In testing a population variance or constructing a confidence interval for the population variance,an essential assumption is that:

• A) sample size exceeds 30.
• B) expected frequencies equal or exceed 5.
• C) the population is uniformly distributed.
• D) the population is normally distributed.
• E) the population is binomially distributed.

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Definitions:

Third Variable

A variable that is not directly involved in the hypothesis being tested but can influence the relationship between the independent and dependent variables.

Action Potential

The neural impulse that travels along the axon and then causes the release of neurotransmitters into the synapse.

Neuron

A nerve cell that is the basic building block of the nervous system, responsible for transmitting information throughout the body.

Genetic Codes

The set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins by living cells.