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Type I and Type II Errors in Hypothesis Testing

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Type I and Type II Errors in Hypothesis Testing

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Questions and Answers

What is another term used in the text to describe assignable causes?

Natural causes

Special causes (correct)

Random causes

Common causes

Which term is used in the text to refer to causes that are natural or random?

Special causes

Common causes

Chance causes (correct)

Unnatural causes

In Statistical Quality Control, what does it mean if one or more points fall outside control limits in a control chart?

The process is said to be out of control and assignable causes are suspected (correct)

The process is experiencing only chance causes

The process is in control and no further action is needed

The process is running smoothly with no variations

What is the aim of Statistical Quality Control (SQC) mentioned in the text?

To trace the sources of variation and eliminate them Signup and view all the answers

What is the main reason for the variation in manufactured products?

Inevitability and nature of the variation Signup and view all the answers

How does the existence of variation in products impact quality?

It affects the consistency and quality of products Signup and view all the answers

What does SQC stand for in the context of the text?

Statistical Quality Control Signup and view all the answers

How are statistical methods used in establishing and maintaining quality standards?

By applying probability theory and sampling techniques Signup and view all the answers

Which constant is obtained from all the observations of a population?

Parameter Signup and view all the answers

What does the Null hypothesis denote in statistical hypothesis testing?

Possible acceptance Signup and view all the answers

In testing a statistical hypothesis, which situation represents a Type I error?

True hypothesis rejected by the test Signup and view all the answers

When n is very large and p and q are not very small, which distribution tends to Normal distribution?

Binomial distribution Signup and view all the answers