A Tool Manufacturer Tests Three Types of Cutters Used in a Lathe

question 3

Multiple Choice

A tool manufacturer tests three types of cutters used in a lathe operation. One type is a laminated steel cutter made of very hard high-carbon steel sandwiched between two softer steels. Another is a special high-speed steel cutter developed using powder metallurgy. The final one is made from cryogenically treated steel. Cutters of each type are tested to see how long they will last (in hours) in continuous operation until they need to be sharpened. The times are recorded for each cutter used in the study, and the results are given below. The P-value of the Kruskal-Wallis statistic H for these data is:

• A)less than 0.025.
• B)between 0.025 and 0.05.
• C)between 0.05 and 0.1.
• D)greater than 0.1.

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Definitions:

Behavioural Responses

The set of actions or reactions of an individual in response to external or internal stimuli, central to the study of psychology and behavioral sciences.

Aggressive Instincts

The innate or inherent impulses that drive individuals to act or react in hostile and confrontational ways.

Personal Weakness

Individual traits or characteristics perceived as areas of improvement or vulnerability, often impacting personal development or performance.