Foumula for concentration of cholesterol for each sample:

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. \

Substitute $\"\"$ , $\"\"$ and $\"\"$ .

$\"\"$ \ \

Concentration of each sample is 2.9186 mM.

5-fold dilution means that a solution is diluted until its molarity is one-fifth of its original value, that is, the volume of the solution is five times its original value.

$\"\"$

Concentration of cholesterol in the diluted plasma is $\"\"$ .