Instruction 15-7
According to an Article in Marketing News, Fewer

question 76

Short Answer

Instruction 15-7
According to an article in Marketing News, fewer cheques are being written at grocery store checkout stands than in the past. To determine whether there is a difference in the proportion of shoppers who pay by cheque among three consecutive years at a 0.05 level of significance, the results of a survey of 500 shoppers in three consecutive years are obtained and presented below.
$$\begin{array} { | l | c | c | c | } \hline \text { Cheque Written } & \text { Year 1 } & \text { Year 2 } & \text { Year 3 } \\\hline \text { Yes } & 225 & 175 & 125 \\\hline \text { No } & 275 & 175 & 125 \\\hline\end{array}$$
-Referring to Instruction 15-7,what is the value of the critical range for the Marascuilo procedure to test for the difference in proportions between year 1 and year 2 using a 0.05 level of significance?

---

Definitions:

Profit Maximizing

A strategy or behavior where a firm determines the level of output that yields the highest possible profit, given market conditions and production costs.

Mechanics

The area of physics that explores how objects are moved and the impact of forces on their motion.

Car Repairs

Refers to the services needed to fix or maintain a car's functionality and performance, from minor adjustments to major overhauls.

Units of Output

Units of output refer to the quantity of goods or services produced by a company, industry, or economy within a specified period.