The Editor of a Major Academic Book Publisher Claims That

question 91

Essay

The editor of a major academic book publisher claims that a large part of the cost of books is the cost of paper. This implies that larger books will cost more money. As an experiment to analyse the claim, a university student visits the bookstore and records the number of pages and the selling price of 12 randomly selected books. These data are listed below. $$\begin{array} { | c | c | c | } \hline \text { Book } & \text { Number of pages } & \text { Selling price } ( \$ ) \\\hline 1 & 844 & 55 \\\hline 2 & 727 & 50 \\\hline 3 & 360 & 35 \\\hline 4 & 915 & 60 \\\hline 5 & 295 & 30 \\\hline 6 & 706 & 50 \\\hline 7 & 410 & 40 \\\hline 8 & 905 & 53 \\\hline 9 & 1058 & 65 \\\hline 10 & 865 & 54 \\\hline 11 & 677 & 42 \\\hline 12 & 912 & 58 \\\hline\end{array}$$ Determine the coefficient of determination, and discuss what its value tells you.

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Definitions:

Neurotransmitters

Neurotransmitters are chemicals in the brain that transmit signals from one neuron to another, playing key roles in various physiological and psychological functions.

Mood

A temporary state of mind or feeling that affects an individual's emotional state and influences perception.

Sleep

A naturally recurring state of mind and body characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity, and inhibition of nearly all voluntary muscles during rapid eye movement (REM) stages.

Motor Cortex

The region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.