Question

The process that makes the spaghetti noodles for Delectable Delights is supposed to produce noodles with an average length of 252 mm. Allison, the Quality Control Manager, is concerned that Machine #42 is not working properly and the noodles it produces are too short. You are asked to take a random sample of 40 noodles from Machine #42 and perform a hypothesis test to determine if the noodles produced by the machine are, on average, less than 252 mm. Use a significance level of 5%.

- Define
*μ*in the context of the problem and state the appropriate hypotheses. (5 pts)

- State and verify the conditions for this hypothesis test for a mean. (5 pts)

Answer #1

The process that makes the spaghetti noodles for Delectable
Delights is supposed to produce noodles with an average length of
252 mm. Allison, the Quality Control Manager, is
concerned that Machine #42 is not working properly and the noodles
it produces are too short. You are asked to take a
random sample of 40 noodles from Machine #42 and perform a
hypothesis test to determine if the noodles produced by the machine
are, on average, less than 252 mm. Use a significance
level...

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ounces of medicine per bottle. However, since the filling machine
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sample standard deviation of s = 0.41 amps. Perform a
statistical test of the Toylot claim. (Use a 1% level of
significance.)
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The Toylot company makes an electric train with a motor that it
claims will draw an average of no more than 0.8 amps under a normal
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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
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a.
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c.
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d.
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2) The best quantitative tool to determine the cause for
variation in a process is:
a.
ANOVA
b.
Correllation...

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