Question

True or False

**1. ** **T F Both S and
R charts may be used to control the mean of a process.**

**2. ** **T F When
sampling a process to establish the control limits for a control
chart of an average, we should typically take somewhere between n=
1 to n=6 items for each of the k samples**

**3. ** **T F
The acronym ARL stands for acceptable run length**

**4. ** **T F We would
identify a process as being out of control if 6 successive points
fall on the same side of the centerline**

**5. ** **T F If we are
estimating the standard deviation for an xbar chart with the
standard deviation of the samples, we correct with b _{n}
factor**

Answer #1

(1) TRUE

S and R diagrams are utilized to screen the mean and variety of a procedure dependent on tests taken from the process at given occasions (hours, shifts, days, weeks, months, and so forth.). The estimations of the examples at a given time comprise a subgroup. Commonly, an underlying arrangement of subgroups is utilized to gauge the mean and standard deviation of a procedure. The mean and standard deviation are then used to create control limits for the mean and scope of every subgroup. Amid this underlying stage, the procedure ought to be in charge.

(2) TRUE

(3). FALSE

Because ARL = AVERAGE RUN LENGTH

(4) FALSE

BECAUSE RULE- 8 successive points fall on the same side of the centerline

(5) TRUE

the standard deviation(sigma) is to be estimated from the standard deviation of the samples.

ANSWERED

PLEASE RATE ME POSITIVE THANKS

True or False
6. T F Sometimes the interquartile range is used in establishing
x bar charts
7. T F The selection of the equation to determine the
probability of accepting a sample is partially based on the size of
the sample.
8. T F R charts may be used in place of S charts to control the
variability of a measurement
9. T F If I was interested in the control of the number of
defects on a particular...

1
An x̅ chart with a sample size of 4 is used to control the mean
of a normally distributed quality characteristic. It is known that
process standard deviation is 8. The upper and lower control limits
of the chart are 147 and 123 respectively. Assume the process mean
shifts to 121.
What is the probability that this shift is detected on the first
subsequent sample?
What is expected number of samples taken before the shift is
detected?
2
The...

MULTIPLE CHOICE
PLEASE MAKE SURE OF ANSWER
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1 point possible (graded)
The usage of which of the following charts is suggested for slow
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A- R chart
B- X chart
C- X-bar chart
9. MA and MR Charts 1
1 point possible (graded)
Which of the following statements about moving average (MA) and
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1. Selection bias occurs more frequently in systematic
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Arrival rates and service rates
Servers and customers
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1) What are some indicators that there are assignable
causes for variation in a process?
I.Process capability.
II. Data patters outside of the control limits.
III. Data patters within the control limits.
IV. Points randomly falling above and below the control chart
center line.
a.
II and III
b.
II, III, IV
c.
I, II, IV
d.
I, II, III, IV
2) The best quantitative tool to determine the cause for
variation in a process is:
a.
ANOVA
b.
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