Use the Traditional Method to Test the Given Hypothesis

question 41

Essay

Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected. A manufacturer uses a new
production method to produce steel rods. A random sample of 17 steel rods resulted in lengths
with a standard deviation of 4.7 cm. At the 0.10 significance level, test the claim that the new
production method has lengths with a standard deviation different from 3.5 cm, which was the
standard deviation for the old method.

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Definitions:

Person-centered Therapy

A non-directive psychotherapy approach that emphasizes the client's self-discovery and self-acceptance through a supportive therapeutic environment.

Motivational Interviewing

A counseling approach that helps individuals find the motivation to make positive changes in their behavior, particularly regarding substance abuse and other health-related behaviors.

Addictions

Compulsive engagement in rewarding stimuli despite adverse consequences, often involving the neglect of normal activities to pursue the addictive substance or behavior.

Project MATCH

A research study designed to compare the effectiveness of three different types of therapy for alcoholism, including Cognitive Behavioral Therapy, Motivational Enhancement Therapy, and Twelve-Step Facilitation.