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Exam 6: Statistical Methods in Quality Management

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Question 31

Multiple Choice

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In a designed experiment,a(n) _____ measures the difference that a factor has on the response.

A) main effect
B) factorial
C) treatment
D) interaction

E) A) and C)
F) A) and D)

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Question 32

Multiple Choice

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In a factorial experiment,each combination of different levels of the factor is called a(n) _____.

A) main effect
B) response
C) treatment
D) interaction

E) B) and C)
F) All of the above

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Question 33

Multiple Choice

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_____ is the process of drawing conclusions about unknown characteristics of a population from which data are taken.

Partitioning a population into hierarchical groups or levels and selecting a sample from each group is known as:

What is the team's position on process improvement? ?

Everything else remaining constant,when the sample size increases:

An experiment that evaluates the effect of two temperatures (100 and 200 degrees F) and two reaction times (45 and 95 minutes) on process yield has _____ possible combinations to test.

The _____ measures the degree of asymmetry of observations around the mean.

_____ is a test or series of tests that enables the experimenter to compare two or more methods to determine which is better or determine levels of controllable factors to optimize the yield of a process or minimize the variability of a response variable.

The number of defects observed in a sample is an example of a continuous random variable.

The Histogram tool provides the basic statistical measures of location,dispersion,and shape.

The approximation to a normal distribution can be assumed for sample sizes of _____.

Briefly explain how the experiment was conducted.

Often,the positively skewed data can be transformed to a normal distribution by using a mathematical transformation such as taking logarithms.

The _____ distribution models the time between randomly occurring events. ?

A manager at a local manufacturing company has been monitoring the output of one of the machines used to manufacture chromium shells.Past data indicate that if the machine is functioning properly,the length of the shells produced by this machine can be modeled as being normally distributed with a mean of 118 centimeters and a standard deviation of 6.3 centimeters.Suppose 10 shells produced by this machine are randomly selected.What is the probability that the average length of these 10 shells will be between 116 and 120 centimeters when the machine is operating "properly"?

Explain how the new experiment was conducted to reduce soldering defects in the process.

The collection of all possible outcomes of an experiment is called the _____.

If a normal random variable has a mean ?= _____ and a standard deviation ?= _____,it is called a standard normal distribution.

_____ is a methodology for drawing conclusions about equality of means of multiple populations.