For a natural gas composed of: C3H8 in volume fraction 0.998
C4H10 in volume fraction 0.002, Please write a balanced chemical
reaction for the combustion of this natural gas in 10 mol%
sub-stoichiometric air (oxygen and nitrogen).
A textile mill wants to test the strength of the fiber of a
certain batch of cotton. The Pressley Strength Index measures fiber
strength in thousands of pounds of pressure required to break the
equivalent of one square inch of fiber. The expected strength level
for the population of cotton used by the company is a population
mean strength of 90 pounds. The sample of 26 pieces of fiber is
drawn. The sample has a mean strength of 85.50 pounds...
A product developer is investigating the tensile strength of a
new synthetic fiber that will be used
to make cloth for men's shirts. Strength is usually affected by
the percentage of cotton used in the
blend of material for the fiber. The engineer conducts a
completely randomized experiment with
five levels of cotton and replicates the experiment five time.
The data are shown bellow
Cotton weight percent
Observation
15
20
25
30
35
1
7
12
14
19
7
2...
The tensile strength of a fiber used in manufacturing cloth is
of interest to the purchaser. Previous experience indicates that
the standard deviation of tensile strength is 2 psi. A random
sample of eight fiber specimens is selected, and the average
tensile strength is found to be 127 psi. USING MINITAB
(please show all work)
(a) Test the hypothesis that the mean tensile strength equals
125 psi versus the alternative that the mean exceeds 125 psi. Use a
= 0.05....
With respect to mechanical strength considerations what is the
feasibility of joining extra hard temper brass parts by soldering
at 250°C?
Please make sure your hand writing is clear an include a
refrence if there is one. Thanks
The average tensile strength of carbon fiber cloth is 600 MPa.
You are testing a new weaving pattern for the carbon fiber threads
and want to know if this new weave causes a difference in the
tensile strength. After testing 18 samples of the new weave, you
found a sample average of 585 MPa with a standard deviation of 34
MPa. At a significance level of 0.05, test to see if this new weave
has a different mean than 600...