The Editor of a Major Academic Book Publisher Claims That

question 135

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. $$\begin{array} { | c | c | c | } \hline \text { Book } & \text { Number of pages } & \text { Selling price (\$) } \\\hline 1 & 844 & 55 \\\hline 2 & 727 & 50 \\\hline 3 & 360 & 35 \\\hline 4 & 915 & 60 \\\hline 5 & 295 & 30 \\\hline 6 & 706 & 50 \\\hline 7 & 410 & 40 \\\hline 8 & 905 & 53 \\\hline 9 & 1058 & 65 \\\hline 10 & 865 & 54 \\\hline 11 & 677 & 42 \\\hline 12 & 912 & 58 \\\hline\end{array}$$ Estimate with 90% confidence the selling price of a book with 900 pages.

---

Definitions:

The Jazz Singer

The first feature-length motion picture with synchronized dialogue sequences, marking a pivotal moment in the transition from silent to sound films.

Exclusive Contracts

Agreements that restrict parties from engaging in similar agreements with others, often found in employment or distribution deals in various industries.

Economy of Scale

The cost advantage that arises with increased output of a product, where the average cost per unit falls as production scales up.

Sound-on-film

A technology that synchronizes audio with moving pictures, allowing for sound to be recorded onto the same film strip as the image.