A Company Keeps Extensive Records on Its New Salespeople on the Premise

question 39

Essay

A company keeps extensive records on its new salespeople on the premise that sales should increase with experience. A random sample of seven new salespeople produced the data on experience and sales shown in the table.

$\begin{array}{|c|c}\text { Months on Job } & \begin{array}{c}\text { Monthly Sales } \\y \text { (\$ thousands) }\end{array} \\\hline 2 & 2.4 \\4 & 7.0 \\8 & 11.3 \\12 & 15.0 \\1 & .8 \\5 & 3.7 \\9 & 12.0\end{array}$
Summary statistics yield $S S _ { x x } = 94.8571 , S S _ { x y } = 124.7571 , S S _ { y y } = 176.5171 , \bar { x } = 5.8571$ , and $\bar { y } = 7.4571$ . Using SSE $= 12.435$ , find and interpret the coefficient of determination.

Comprehend the ecological and evolutionary implications of cooperative breeding and helping behavior in animal societies.

Relate concepts of life span, reproductive span, and breeding systems to the evolution of social behaviors in animals.

Explain the factors influencing reproductive strategies, including territory inheritance and the establishment of nests.

Describe the significance of extending the reproductive phase and its evolutionary advantages as supported by the grandmother hypothesis.

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Definitions:

Internal Attribution

The process of ascribing the cause of behavior to personal aspects such as traits, feelings, or abilities.

Ease of Retrieval Effect

A phenomenon where individuals judge an event or concept as more frequent or influential if they can easily recall examples of it.

Working Memory Capacity

The amount of information that an individual can hold and manipulate in their mind at one time for short periods.

Sense of Self

The perception or consciousness of one's own identity and being.