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Exam 16: Time Series Forecasting and Index Numbers

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Question 31

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Assume that 25 samples of 50 each are taken and the total number of defectives is 34.Find the LCL and UCL for the p chart.

A) [.0134,.0410]
B) [0,.0962]
C) [.0042,.0502]
D) [.0239,.0304]

E) B) and C)
F) None of the above

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Question 32

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A goal of statistical process control is continuous process improvement.

A) True
B) False

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Question 33

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How well a process is able to meet the requirements set forth by the process design is called the quality of _____________.

In 25 samples of 100 units each,75 units were found to be defective.Find the appropriate UCL and LCL for the p chart.

_________ is the set of international standards on quality management and quality assurance systems.It establishes processes for assuring that goods and services offered by the company meet a consistent level of quality acceptable to customers.

When using and R charts to analyze and improve a process,first,the 11ec8fed_982f_245d_bdf7_67e431980607_TB2569_11 chart is analyzed and the necessary action(s)to correct assignable causes of variation is (are)taken before the R chart is analyzed.

Sources of process variations that are inherent to the process design are called ___________ causes of variation.

The number of estimated process standard deviations between and the closest specification limit is the _____________ of the process.

A sequence of steadily decreasing points on a control chart is called run down.

How well a product or a service performs in the marketplace is called the quality of ______________.

If = 5.2, = ) 3,and n = 4,calculate the natural tolerance limits.

A ___________ is a set of process observations that are examined for the purpose of constructing control charts.

A cause-and-effect diagram enumerates the potential causes of an undesirable effect on the process to discover sources of process variation and to identify opportunities for process improvement.

In 20 samples,there are 80 units defective.If each sample consists of 100 units,find the appropriate UCL and the LCL for the p chart.

When a process is influenced only by common causes of variation,

A sequence of steadily increasing plot points on a control chart is referred to as ___________.

Process leeway is the distance between natural tolerance limits and control limits.

Control charts are used to reduce common causes of variation.

If a process is only influenced by common causes of variation,we can state that the process is in statistical control.

If a manufacturing process is in statistical control,it means that the process is capable of producing products that meet the needs of the customers.