A Researcher Is Interested in Evaluating a Certain Brand of Radial

question 127

Short Answer

A researcher is interested in evaluating a certain brand of radial auto tire. Twenty tires are randomly selected from retail outlets throughout the country, and each is placed on a special machine which rotates the tires at a constant speed (equivalent to 55 miles per hour) against the friction equivalent of a 4000 pound auto being driven on a smooth highway. Each tire is run until there is no tread left. The number of miles (in thousands) were as follows: 40, 30, 32, 35, 39, 35, 31, 36, 37, 35, 34, 35, 37, 34, 36, 38, 35, 36, 35, 36.
-Setting alpha at .05, test the hypothesis that this sample of tires could represent a population whose mean was 36.50

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Definitions:

Stainless Steel

An alloy of iron with a minimum of 10.5% chromium content by mass, known for its resistance to rust and staining.

System Nervousness

The phenomenon in planning and scheduling where small changes lead to significant, often unnecessary, adjustments in operations.

MRP Schedule

A schedule generated by Material Requirements Planning systems, detailing what materials are required and when, to meet production demands.

Dependent Inventory Demand Model

A model that calculates inventory requirements based on the demand for final products and the components needed to produce them.