Three Years Ago, a Major Hotel Chain Purchased a Large

question 14

Multiple Choice

Three years ago, a major hotel chain purchased a large number of heating and air-conditioning units from three major manufacturers, A, B, and C. The accounting department of the hotel chain kept records on their repair and replacement costs over the last three years. The manager of the purchasing department randomly selected six brand A, seven brand B, and six brand C heating and air-conditioning unit records. The repair and replacement costs in dollars are summarized in the following table. At α = .05, can we conclude that there is a significant difference in repair costs among the three brands?

• A) Reject the null hypothesis.
• B) Fail to reject the null hypothesis.

---

Definitions:

Socioeconomic Status

An indicator of where a person or family stands in terms of economic and social status, determined by their income, level of education, and type of job.

Sensorimotor Stage

The first stage of Piaget's theory of cognitive development, occurring from birth to about 2 years of age, where infants learn about the world through their senses and actions.

Piaget

Jean Piaget, a Swiss psychologist known for his pioneering work in child development, specifically his theory of cognitive development.

Problem-Solving Strategy

A method or approach used to identify, analyze, and resolve problems or obstacles in an effective manner.