Question
In: Math
show all work 2) A semiconductor manufacturer produces printed circuit boards that are sampled to determine...
show all work
2) A semiconductor manufacturer produces printed circuit
boards that are sampled to determine the thickness of their copper
plating. The following statements create a data set named Trans,
which contains the plating thicknesses (Thick) of 50 boards:
3.412
3.45
3.551
3.451
3.60
3.462
3.586
3.645
3.252
3.62
3.606
3.634
3.852
3.56
3.342
3.341
3.444
3.774
3.632
3.199
3.71
3.654
3.723
3.981
3.934
3.708
3.934
3.315
3.762
3.223
3.469
3.481
3.515
3.535
3.46
3.575
3.488
3.515
3.484
3.482
3.517
3.483
3.467
3.467
3.502
3.471
3.516
3.474
3.5
3.466
a. Using R find the mean, median, mode, range, variance and
standard deviation of the data. Attach your output from R.
b. Based on the results in part a, construct the intervals and
for the data set. Be sure to show your interval below. What
percentage of the measurements for the data set falls in each
interval? Compare the intervals , and . Explain why the results are
different.
Solutions
milcah answered 1 year agoRelated Solutions
A semiconductor manufacturer produces printed circuit boards that are sampled to determine the thickness of their...
A semiconductor manufacturer produces printed circuit boards
that are sampled to determine the thickness of their copper
plating. The following statements create a data set named Trans,
which contains the plating thicknesses (Thick) of 50 boards:
3.412
3.45
3.551
3.451
3.60
3.462
3.586
3.645
3.252
3.62
3.606
3.634
3.852
3.56
3.342
3.341
3.444
3.774
3.632
3.199
3.71
3.654
3.723
3.981
3.934
3.708
3.934
3.315
3.762
3.223
3.469
3.481
3.515
3.535
3.46
3.575
3.488
3.515
3.484
3.482
3.517
3.483
3.467
3.467...
All printed circuit boards (PCBs) that are manufactured at a certain plant are inspected. An analysis...
All printed circuit boards (PCBs) that are manufactured at a
certain plant are inspected. An analysis of the company’s records
indicates that 22% are flawed in some way. Of those that are
flawed, 84% are reparable and the rest must be discarded. If a
newly produced PCB is randomly selected, what is the probability
that it does not have to be discarded?
Please Solve Manually.
A manufacturer of printed circuit boards is considering purchasing a new surface mount technology component placement...
A manufacturer of printed circuit boards is considering
purchasing a new surface mount technology component placement
system. Two machines are under consideration and the following
information is prepared for the economic evaluation. If the
company's after-tax MARR of 12% per year and MACRS with a 7-year
recovery period is used, compute the after-tax cash flow(ATCF) at
the end of year 8 for the Machine Q. Assume an effective tax of 35%
per year.
Machine
Q
R
First costs
$392,248
$395,000...
In the production of printed circuit boards, errors in the alignment of electrical connections are a...
In the production of printed circuit boards, errors in the
alignment of electrical connections are a source of scrap. The
accompanying table shows the registration error and the temperature
used in the production of circuit boards in an experiment in which
higher cost material was used.
Registration Error
Temperature
−10.7
278
3.7
320
3.2
299
10.6
321
−13.8
271
6.2
293
13.7
324
A. Fit a quadratic regression model and state the quadratic
regression.
B. Perform a residual analysis on...
Manchester Technology, Inc. manufactures several different types of printed circuit boards; however, two of the boards...
Manchester Technology, Inc. manufactures several different types
of printed circuit boards; however, two of the boards account for
the majority of the company’s sales. The first of these boards, a
television circuit board, has been a standard in the industry for
several years. The market for this type of board is competitive and
price-sensitive. Manchester plans to sell 79,000 of the TV boards
in 20x1 at a price of $450 per unit. The second high-volume
product, a personal computer circuit...
Manchester Technology, Inc. manufactures several different types of printed circuit boards; however, two of the boards...
Manchester Technology, Inc. manufactures several different types
of printed circuit boards; however, two of the boards account for
the majority of the company’s sales. The first of these boards, a
television circuit board, has been a standard in the industry for
several years. The market for this type of board is competitive and
price-sensitive. Manchester plans to sell 79,000 of the TV boards
in 20x1 at a price of $450 per unit. The second high-volume
product, a personal computer circuit...
Q1/ A batch of printed circuit cards is populated with semiconductor chips with 25% are defective...
Q1/
A batch of printed circuit cards is populated with semiconductor
chips with 25% are defective cards. Five of these are selected
randomly for function testing.The random variable X has a binmial
distribution.
Find the probability that we get exactly one defective card
0.564
0.395
0.764
0.987
ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــ
Q2/
A batch of printed circuit cards is populated with semiconductor
chips with 45% are defective cards. Five of these are selected
randomly for function testing . The random variable X has...
In the production of printed circuit boards for the electronics industry, a 0.60-mm layer of copper...
In the production of printed circuit boards for the
electronics industry, a 0.60-mm layer of copper is laminated onto
an insulating plastic board. Next, a circuit pattern made of a
chemically resistant polymer is printed on board. The unwanted
copper is removed by chemical etching, and the protective polymer
is finally removed by solvents. One etching reaction is:
Cu(NH3)4Cl2(aq) + 4NH3(aq) + Cu(s) 2Cu(NH3)4Cl(aq)
A plant needs to manufacture 10,000 printed circuit boards,
each 8.0 x 16.0 cm in...
An on-line production of printed-circuit boards (PCBs) involves ten successive sequences (i = 1, 2, 3,...
An on-line production of printed-circuit boards (PCBs) involves
ten successive sequences (i = 1, 2, 3, …, 10) of
component-placement/assembly on the board. In a quality-control
effort, the board is tested for its integrity in each of ten
successive assembly-tasks. It is presumed that the reliability of
final, completed PCB depends on possible, failure-proneness
associated with each (successive) assembly-task involved. Table
given below shows the number of PCBs (ni) per successive
batch tested. Also shown in the table, is the...
The following represents the number of solder defects on 24 samples on ve printed circuit boards;...
The following represents the number of solder defects on 24
samples on ve printed circuit boards;
7,6,8,10,24,6,5,4,8,11,15,8,4,15,11,12,8,6,5,9,7,14,8,21.
(a) Using all the data, compute trial control limits for a U
control chart, construct the chart and plot the data.
(b) Can we conclude that the process is in control using a U
chart? If not, assume assignable causes can be found, list points
and revise the control limits.
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