MAT 510 Final Exam LATEST

·        Question 1
4 out of 4 points
A SIPOC map is:
·         Question 2
4 out of 4 points
The fact that processes tend to be dynamic, rather than static, is a key principle of statistical thinking. Which of the following is a natural consequence of this fact?
·         Question 3
4 out of 4 points
Process complexity is important because complex processes:
·         Question 4
4 out of 4 points
Process measurements are:
·         Question 5
·         4 out of 4 points
Suppose the Process Improvement Framework were used to attack a problem where the process in question was inherently unstable. Which of the following would be a likely result of this effort?
·         Question 6
4 out of 4 points
The histogram below showing ages of credit card holders displays what type of distribution?
·         Question 7
4 out of 4 points
A process is said to be capable if:
·         Question 8
4 out of 4 points
A main purpose of a control chart is to:
·         Question 9
4 out of 4 points
The histogram has which of the following limitations?
·         Question 10
4 out of 4 points

In evaluating data on our process outputs, four characteristics we might investigate are: central tendency, variation, shape of distribution, and stability. Which of the following tools would be most helpful to determine stability of the process?
·         Question 11
4 out of 4 points
George Box tells us “all models are wrong but some are useful”. By this comment he means:
 
100MPa
200MPa
6.2
11.1
7.3
10.3
8.2
13
8.3
14.3
7.5
11.2
6.5
14.7
9.6
10
9
9.4

·         Question 12
4 out of 4 points
Models based on subject matter fundamentals (theory) are generally better than statistical models for:
·         Question 13
4 out of 4 points
Which of the following is NOT a reason for adjusted R-Square being low?
·         Question 14
4 out of 4 points
Results of regression analysis are often abused in the following ways:
·         Question 15
4 out of 4 points
Process models are used to:
·         Question 16
4 out of 4 points
What should one consider when analyzing the results of an experiment?
·         Question 17
4 out of 4 points
Identify the assumption that is NOT made when conducting an experiment:
·         Question 18
4 out of 4 points
This technique is used to eliminate the effects of nuisance factors (e.g., machines, day of week, and season of year) from an experiment.
·         Question 19
4 out of 4 points
The following table shows data on the effect of Machine Pressure on product hardness.   What statistical test should be used to test the effect of pressure on average hardness? 
·         Question 20
4 out of 4 points
Which of the following purposes are served by replicating an experiment?
·         Question 21
4 out of 4 points
We ran a taste-test to see which soft drink employees in our company prefer. We had 100 employees, selected as randomly as possible, taste test two brands and determine which they preferred. Which of the following would be a reasonable statistical analysis to determine if there is a clear preference among our employees?
·         Question 22
4 out of 4 points
We conducted a t test to compare the average cycle time to approve two different types of loans, auto and personal. The p-value for the t test was -.03, where the hypotheses were:
·         Question 23
4 out of 4 points
Based on a regression model, I have developed a 95% prediction interval for the time it will take me to run a mile under specific conditions (weather, what I have eaten & drank, running shoes used, and so on). This interval goes from 5.2 minutes to 6.1 minutes. Which of the following could be an accurate description of this interval?
·         Question 24
4 out of 4 points
For which of the following scenarios am I most likely to utilize a Chi-squared test?
·         Question 25
4 out of 4 points
We are conducting a poll for the mayoral election of a medium sized city, and found with one week before the election that the Democrat candidate is leading with 52% planning to vote for her, 46% planning to vote for the Republican, with 2% not sure. The 95% confidence interval for proportion planning to vote for the Democrat is +/- 3%. Based on this information, and making reasonable assumptions, which of the following statements is correct?


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