Instruction 12-4
the Managers of a Brokerage Firm Are Interested

question 177

Short Answer

Instruction 12-4
The managers of a brokerage firm are interested in finding out if the number of new customers a broker brings into the firm affects the sales generated by the broker.They sample 12 brokers and determine the number of new customers they have enrolled in the last year and their sales amounts in thousands of dollars.These data are presented in the table that follows.
$\begin{array}{ccc} \text {Broker }&\text {Clients }&\text { Sales}\\\hline1 & 27 & 52 \\2 & 11 & 37 \\3 & 42 & 64 \\4 & 33 & 55 \\5 & 15 & 29 \\6 & 15 & 34 \\7 & 25 & 58 \\8 & 36 & 59 \\9 & 28 & 44 \\10 & 30 & 48 \\11 & 17 & 31 \\12 & 22 & 38\end{array}$
-Referring to Instruction 12-4,the least squares estimate of the Y-intercept is ________.

---

Definitions:

Concrete Operational Stage

A developmental phase in Piaget's theory of cognitive development, from approximately 7 to 11 years old, where children gain the ability to think logically about concrete events.

Sensorimotor Stage

The first of Jean Piaget's stages of cognitive development, where infants learn about the world through their sensory and motor interactions.

Preoperational Stage

A stage of cognitive development, according to Piaget, where children aged 2 to 7 years engage in symbolic play and struggle with taking the perspective of others.

Emerging Adulthood

A phase of life between adolescence and full-fledged adulthood, typically from late teens through twenties, characterized by exploration and self-discovery.