Repair Bills an Automobile Service Shop Reported the Summary Statistics

question 96

Essay

Repair bills An automobile service shop reported the summary statistics shown for repair
bills (in $) for their customers last month. $$\begin{array} { | l | r | } \hline \text { Min } & 27 \\\text { Q1 } & 88 \\\text { Median } & 132 \\\text { Q3 } & 308 \\\text { Max } & 1442 \\\text { Mean } & 284 \\\text { SD } & 140 \\\hline\end{array}$$
a. Were any of the bills outliers? Show how you made your decision.
b. After checking out a problem with your car the service manager gives you an estimate of
"only $90." Is he right to imply that your bill will be unusually low? Explain briefly.

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Definitions:

Melanin Synthesis

The biological process by which cells produce melanin, a pigment found in the skin, hair, and eyes of animals, responsible for coloration and protection against ultraviolet radiation.

Tyrosine

An amino acid that is a precursor to neurotransmitters like dopamine and norepinephrine, important for protein synthesis and many metabolic pathways.

Chorion

The outermost membrane enclosing the embryo in eggs of birds, reptiles, and mammals.

Early Prenatal Diagnosis

The practice of detecting congenital disorders or diseases in a fetus early in pregnancy.