SCENARIO 12-6 According to an article in Marketing News, fewer checks are being written at the grocery store checkout than in the past.To determine whether there is a difference in the proportion of shoppers who pay by check 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. 
-Referring to Scenario 12-6, the null hypothesis cannot be rejected.
Definitions:
Position
The location of an object or person in relation to other things; in medicine, it can describe the posture of a patient or the orientation of body parts.
Ultrasound
A technology that uses sound waves with frequencies higher than the audible limit of human hearing to produce images of the inside of the body, used for diagnostic and therapeutic purposes.
Hyperactivity Disorder
A condition marked by excessive energy and impulsive actions, often referred to as Attention-Deficit/Hyperactivity Disorder (ADHD).
Attention-Deficit
A disorder characterized by a consistent pattern of inattention and/or hyperactive and impulsive behavior that interferes with functioning or development.
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