$006-$ What percentage of values falls within $+2$ standarc deviations in a Gaussian distribution?

A$.47\mathrm{.}5\%.$

B$.68\mathrm{.}26\%.$

C$.95\mathrm{.}45\%.$

$007-$ Which of the following mostly describes the Clinical Decision Limit $($CDL$)$ in clinical chemistry?

A$.$ The decision of the upper limit of the reference range.

B$.$ The decision of the lower limit of the reference range.

C$.$ The point at which a clinical decision is made, I

D$.$ The decision of the mean value of a set of test results.D$.99\mathrm{.}74\%.$