Question
In: Statistics and Probability
A process that produces bottles of shampoo, when operating correctly, produces bottles whose contents weigh, on...
A process that produces bottles of shampoo, when operating correctly, produces bottles whose contents weigh, on average 20 ounces. A random sample of nine bottles from a single production run yielded the following content weights (in ounces):
21.4 19.7 19.7 20.6 20.8 20.1 19.7 20.3 20.9
Assuming that the population distribution is normal, test at the 5% significance level against the two-sided alternative the null hypothesis that the process is operating correctly.
Solutions
orchestra answered 1 year agoRelated Solutions
2.) A process produces cable for the local telephone company. When the process is operating correctly,...
2.) A process produces cable for the local telephone company.
When the process is operating correctly, cable diameter follows a
normal distribution with mean 4 inches. A random sample of 5pieces
of cable found diameters with a sample mean of 3 inches and a
sample standard deviation of 5÷9 inches.
a) State your hypothesis H0 and H1 claiming that the process is
operating correctly.
b) State the decision rule, sample statistics, table value and test
statistic in the same order...
A machine is designed to fill 16-ounce bottles of shampoo. When the machine is working properly,...
A machine is designed to fill 16-ounce bottles of shampoo. When
the machine is working properly, the mean amount poured into the
bottles is 16.05 ounces with a standard deviation of .005
ounces.
If four bottles are randomly selected each hour and the number
of ounces in each bottle is measured, then 95% of the observations
should occur in what interval? Round answers to four decimal
places.
When a molecule absorbs a photon, what is the process called? When a molecule produces a...
When a molecule absorbs a photon, what is the process called?
When a molecule produces a photon, what is the process called?
Process Costing using the FIFO Method A process cost system is used when a company produces...
Process Costing using the FIFO Method
A process cost system is used when a company produces a product
that is homogeneous-that is, individual units are indistinguishable
from each other.
Costs flow from one production department to the next and
materials, labor and overhead are added until the final product is
moved to finished goods inventory ready to be sold. The flowchart
illustrates the flow of costs into Work in Process and Finished
Goods in a process costing system.
Cost Flows...
Process Costing using the FIFO Method A process cost system is used when a company produces...
Process Costing using the FIFO Method
A process cost system is used when a company produces a product
that is homogeneous-that is, individual units are indistinguishable
from each other.
Costs flow from one production department to the next and
materials, labor and overhead are added until the final product is
moved to finished goods inventory ready to be sold. The flowchart
illustrates the flow of costs into Work in Process and Finished
Goods in a process costing system.
Cost Flows...
When the rod shearing process at Newcastle Steel is ‘in control’ it produces rods with a...
When the rod shearing process at Newcastle Steel is ‘in control’
it produces rods with a mean length of 120 cm. Periodically,
quality control inspectors select a random sample of 36 rods. If
the mean length of sampled rods is too long or too short, the
shearing process is shut down. The last sample showed a mean of
120.3 cm with a standard deviation of 0.9 cm. Using α = 0.05, the
appropriate decision is _________.
do not reject the...
QUESTION 2: When a manufacturing process is operating properly, maximum length of a certain part must...
QUESTION 2:
When a manufacturing
process is operating properly, maximum length of a certain part
must be 25cm. The lengths which are more than 25cm are scrap. If
the proportion of scrap is more than 0.171255,
then a modification of the process is needed to reduce this amount.
On one production run, a random sample of 50 consecutive parts are
selected and the following lengths are observed.
19.52
23.15
23.17
18.33
25.68
18.51
20.63
25.68
21.21
26.58
19.85
19.63
20.58...
Twenty-five samples of 100 items each were inspected when a process was considered to be operating...
Twenty-five samples of 100 items each were inspected when a
process was considered to be operating satisfactorily. In the 25
samples, a total of 155 items were found to be defective.
(a)What is an estimate of the proportion defective when
the process is in control?
____?___
(b)What is the standard error of the proportion if
samples of size 100 will be used for statistical process
control? (Round your answer to four decimal
places.)
____?____
(c)Compute the upper and lower control...
When things are operating properly, a certain Internet bank can process a maximum of 28 electronic...
When things are operating properly, a certain Internet bank can
process a maximum of 28 electronic transfers every minute during
the busiest periods of the day. If it receives more transfer
requests than this, then the bank's computer system will become
so overburdened that it will slow to the point that no electronic
transfers can be handled. If during the busiest periods of the day
requests for electronic transfers arrive at the rate of 180 per
10-minute period on average,...
Corny Inc. produces a single product in a process costing environment. All materials are added when...
Corny Inc. produces a single product in a process costing
environment. All materials are added when the conversion process is
60% complete. For the current period the following information is
given:
Units Material Costs Conversion Costs
Beginning Inventory
3,500
$4,500
$5,400
Started During the Current Period
20,000
$32,000
$78,200
Ending Inventory
2,000
The beginning inventory was 40% complete as to conversion, while
the ending inventory was 70% completed for conversion purposes.
Corny uses the weighted-average costing method.
The cost per...
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