In a Manufacturing Process,a Random Sample of 36 Bolts Has

question 24

Multiple Choice

In a manufacturing process,a random sample of 36 bolts has a mean length of 3 inches with a standard deviation of .3 inches.What is the 99 percent confidence interval for the true mean length of the bolt?

• A)2.902 to 3.098
• B)2.884 to 3.117
• C)2.864 to 3.136
• D)2.228 to 3.772
• E)2.802 to 3.198

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Definitions:

Control Group

A group in an experiment that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.

Experimental Group

The experimental group in a study is the group that receives the treatment or intervention being tested, allowing researchers to assess the effect of the treatment.

Single-Blind

An experimental procedure where the participants do not know which group (control or experimental) they are in, to reduce bias.

Simple Behavior

Refers to basic actions or responses that are not complex or complicated, often innate and requiring minimal processing, such as a reflex.