Salesperson
the General Manager of a Chain of Furniture Stores

question 78

Essay

Salesperson
The general manager of a chain of furniture stores believes that experience is the most important factor in determining the level of success of a salesperson.To examine this belief she records last month's sales (in $1,000s)and the years of experience of 10 randomly selected salespeople.These data are listed below.
$$\begin{array} { | c | c | c | } \hline \text { Ealesperson } & \text { Years of Experience } & \text { Eales } \\\hline 1 & 0 & 7 \\\hline 2 & 2 & 9 \\\hline 3 & 10 & 20 \\\hline 4 & 3 & 15 \\\hline 5 & 8 & 18 \\\hline 0 & 5 & 14 \\\hline 7 & 12& 20 \\\hline 8 &7 & 17 \\\hline 9 &20 & 30 \\\hline 10 & 15& 25 \\\hline\end{array}$$
-Determine the least squares regression line.
$\hat{ Y }$ = _____________________________

---

Definitions:

Myosin Filaments

Thick filaments within muscle cells that interact with actin filaments to cause muscle contraction through a sliding filament mechanism.

Muscle Contraction

The process where muscle fibers shorten, generating force, following activation by a nerve impulse.

Cross-Bridges

The connection formed between the heads of myosin molecules and actin filaments during muscle contraction.

Tropomyosin

A protein found in muscle tissue that regulates muscle contraction by blocking or exposing binding sites for myosin on actin filaments.