Three Years Ago,a Major Hotel Chain Purchased a Large Number

question 70

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

• A)Reject the null hypothesis
• B)Fail to reject the null hypothesis
• C)The accounting department of the hotel chain kept records on their repair and replacement costs over the last 3 years.The manager of the purchasing department randomly selected 6 brand A,7 brand B,and 6 brand C heating and air-conditioning unit records.The repair and replacement costs in dollars are summarized in the following table.At

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Definitions:

Record

An individual entry in a database, consisting of field values that together describe a single entity or instance.

Design

The process of creating a plan or convention for the construction of an object, system, or measurable human interaction.

Form

A graphical interface in databases and applications where users can enter, modify, or view data fields.

Control Wizard

A feature in software development environments that assists users in creating complex controls by guiding them through the configuration process.