Which of the Following Is TRUE

question 66

Multiple Choice

Which of the following is TRUE?

• A)An example of an unbiased estimate is the variance of a sample; a typical biased estimate is the researcher's initial expectation prior to sampling.
• B)There is only one biased estimate (i.e., the researcher's expected findings); there are several unbiased estimates.
• C)A biased estimate is preferred to an unbiased estimate when the population is not normally distributed.
• D)A sample's variance is a biased estimate of the population's variance, but a slight change in the variance formula gives an unbiased estimate.

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Definitions:

Cortisol

A hormone synthesized by the adrenal glands that is often secreted in reaction to stress and decreased levels of blood sugar.

Myelin Sheath

A fatty layer encasing the axons of some neurons, which increases the speed at which electrical impulses propagate along the nerve cells.

Adrenal Glands

Endocrine glands located above the kidneys, responsible for producing hormones like adrenaline and cortisol, involved in stress response.

Nerve Network

A system of interconnected nerve cells (neurons) that work together to process and transmit information in the body.