A Particular Paperback Mystery Book Is Published with a Choice

question 95

Multiple Choice

A particular paperback mystery book is published with a choice of three different pictures on the cover: a photograph of the actor playing the main character in the movie version of the book,a drawing of the mansion where the story takes place,or an embossed graphic of the murder weapon.A certain bookstore keeps copies of this book with each of the pictures on the cover on its racks.To test the hypothesis that sales of this book are equally divided among the three choices,a simple random sample of 120 purchases of this book is obtained.The numbers are displayed in the table below. What is the value of the chi-square statistic under the null hypothesis that sales are equally divided among the three different covers?

• A)1.225
• B)3
• C)3.35
• D)40

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Definitions:

Per Decade

Referring to or occurring every ten years, often used in context with statistics, trends, or measurements.

Managing his Emotions

The process of recognizing, understanding, and appropriately expressing one's emotions, leading to effective emotional regulation and well-being.

Self-motivation

The ability to drive oneself to take initiative and action to pursue goals and complete tasks without external influence or pressure.

Empathy

The capability to comprehend and empathize with someone else's emotions.