Question
In: Statistics and Probability
Two different polishing materials are being evaluated for use in machining operations in a manufacturing company....
Two different polishing materials are being evaluated for use in machining operations in a manufacturing company. One hundred machine parts were polished using polishing material A and of this number 87 had no polishing-included defects. Another 100 machine parts were polished using polishing material B and 75 parts were satisfactory upon completion. Is there any reason to believe that the two polishing materials differ? Use α = 0.02.
Solutions
orchestra answered 1 year agoRelated Solutions
Two different types of polishing solution are being evaluated for possible use in a tumble-polish operation...
Two different types of polishing solution
are being evaluated
for possible use in a tumble-polish operation for
manufacturing
intraocular
lenses used in the human eye following
cataract surgery. Three hundred lenses were tumble
polished using the first polishing solution, and of this
number
253 had no polishing-induced defects. Another 300 lenses were
tumble-polished using the second polishing solution, and 196 lenses
were
satisfactory upon completion.
Construct a 99% confidence interval p1-p2.
6) In a manufacturing operation, a part is produced by machining, polishing, painting, and coating. If...
6) In a manufacturing operation, a part is produced by
machining, polishing, painting, and coating. If there are three
machine tools, four polishing tools, three painting tools, and two
coating tools, how many different routings (consisting of
machining, followed by polishing, followed by painting, and
followed by coating) for a part are possible?
Wallace, Inc., produces a product tha goes through three departments: Machining, Assembly, and Polishing. Materials are...
Wallace, Inc., produces a product tha goes through three
departments: Machining, Assembly, and Polishing. Materials are
added at the beginning of the machining operation; labor and
overhead are added uniformly throughout the process. The Machining
department had work in process at the beginning and end of 1998 as
follows:
Percentage of Completion
Materials
Conversion Costs
Januarty 1, 1998, 2,500 units
100
60
December 31, 1998, 4,000 units
100
50
The company completed 42,500 units during the year and incurred
the...
Hamilton Manufacturing Company Direct materials 175,000 Materials handling 35,000 Grinding 300,000 Polishing 100,000 Product Modification 500,000...
Hamilton Manufacturing Company Direct materials 175,000
Materials handling 35,000 Grinding 300,000 Polishing 100,000
Product Modification 500,000 Providing Power 225,000 System
Calibration 400,000 Machine Hours 37,500 units Direct Labor Hours
15,000 Engineering hours 1,200 Batches 200 Materials handling based
on direct material cost Grinding based on machine hours Polishing
based on machine hours Product Modification based on engineering
hours Providing Power based on direct labor hours System
Calibration based on batches Job 231 Completed 1,675 units Direct
Materials 18,500 Direct labor...
Manufacture of a certain component requires three different machining operations. Machining time for each operation is...
Manufacture of a certain component requires three different
machining operations. Machining time for each operation is normally
distributed and the three times are independent of one another. The
mean values are 15, 30, and 20 minutes respectively. Their standard
deviations are 1, 2, and 1.5 minutes respectively. What is the
probability that it takes at least 1.5 hour of machining time to
produce a randomly selected item
Manufacture of a certain component requires three different machining operations. Machining time for each operation has...
Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal distribution, and the three times are independent of one another. The mean values are 15, 20, and 30 min, respectively, and the standard deviations are 2, 1, and 1.7 min, respectively. What is the probability that it takes at most 1 hour of machining time to produce a randomly selected component? (Round your answer to four decimal places.)
Mason Company has two manufacturing departments—Machining and Assembly. The company considers all of its manufacturing overhead...
Mason Company has two manufacturing departments—Machining and
Assembly. The company considers all of its manufacturing overhead
costs to be fixed costs. It provided the following estimates at the
beginning of the year as well as the following information with
respect to Jobs A and B:
Estimated DataMachiningAssemblyTotalManufacturing
overhead$12,500,000 $625,000 $13,125,000 Direct labor hours
25,000 500,000 525,000 Machine hours
500,000 20,000 520,000
Job AMachiningAssemblyTotalDirect labor
hours51015Machine hours11213
Job BMachiningAssemblyTotalDirect labor hours459Machine
hours12315
Required:
1. If Mason Company uses a plantwide predetermined overhead rate
with direct...
Mason Company has two manufacturing departments—Machining and Assembly. The company considers all of its manufacturing overhead...
Mason Company has two manufacturing departments—Machining and
Assembly. The company considers all of its manufacturing overhead
costs to be fixed costs. It provided the following estimates at the
beginning of the year as well as the following information with
respect to Jobs A and B:
Estimated Data
Machining
Assembly
Total
Manufacturing overhead
$
16,038,000
$
729,000
$
16,767,000
Direct labor hours
27,000
594,000
621,000
Machine hours
594,000
22,000
616,000
Job A
Machining
Assembly
Total
Direct labor hours
5
10
15...
Mason Company has two manufacturing departments—Machining and Assembly. The company considers all of its manufacturing overhead...
Mason Company has two manufacturing departments—Machining and
Assembly. The company considers all of its manufacturing overhead
costs to be fixed costs. It provided the following estimates at the
beginning of the year as well as the following information with
respect to Jobs A and B:
Estimated Data
Machining
Assembly
Total
Manufacturing overhead
$
12,500,000
$
625,000
$
13,125,000
Direct labor hours
25,000
500,000
525,000
Machine hours
500,000
20,000
520,000
Job A
Machining
Assembly
Total
Direct labor hours
5
10
15...
Mason Company has two manufacturing departments—Machining and Assembly. The company considers all of its manufacturing overhead...
Mason Company has two manufacturing departments—Machining and
Assembly. The company considers all of its manufacturing overhead
costs to be fixed costs. It provided the following estimates at the
beginning of the year as well as the following information with
respect to Jobs A and B:
Estimated Data
Machining
Assembly
Total
Manufacturing overhead
$
1,764,000
$
196,000
$
1,960,000
Direct labor hours
14,000
126,000
140,000
Machine hours
126,000
9,000
135,000
Job A
Machining
Assembly
Total
Direct labor hours
5
10
15...
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