A Random Sample of 160 Car Purchases Are Selected and Categorized

question 15

Multiple Choice

A random sample of 160 car purchases are selected and categorized by age. The results are listed below. Theage distribution of drivers for the given categories is 18% for the under 26 group, 39% for the 26 -45 group, 31%for the 45-65 group, and 12% for the group over 65. Calculate the chi-square test statistic ?2 to test the claimthat all ages have purchase rates proportional to their driving rates. Use ? = 0.05. $\begin{array}{l|cccc}\text { Age } & \text { Under 26 } & 26-45 & 46-65 & \text { Over } 65 \\\hline \text { Purchases } & 66 & 39 & 25 & 30\end{array}$

• A) 75.101
• B) 85.123
• C) 101.324
• D) 95.431

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Definitions:

Online Shopper

A consumer who purchases products or services via the internet.

Dynamic Pricing

A pricing strategy where prices are adjusted in real-time based on market demand, competition, and other factors.

Spam

Unsolicited digital messages sent in bulk, typically as email, that are often irrelevant or inappropriate to the recipients.

Showrooming

The practice of examining products in a store and then buying them online for a cheaper price.