Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 03 Oct 2017 My Price 8.00

ethanol—water distillation

The yields from an ethanol—water distillation column have a standard deviation of 1%. Process specifications call for a target yield of 93%. Management wishes to detect any decrease in the true mean yield.

a. A random sample of eight recent batches produced the following yields. Conduct a hypothesis test to determine whether the true mean yield has decreased. Use a 0.01 significance level.

b. Find the p-value associated with the test in part a.

c. In Exercise 4.5, you constructed a 99% confidence interval for this situation. Use this interval to determine whether the true mean yield has changed. Dis-cuss the relationship of the 99% confidence interval and the corresponding hypothesis test.

d. Find the power of this test to detect a change in the true mean yield to 92.5%.

e. Find the sample size required to achieve a power of 0.95 when the true mean yield is 92.5%.

f. What did you assume to do these analyses? How can you check these assumptions?

Answers

Maurice Tutor
(5)
Status NEW Posted 03 Oct 2017 10:10 PM My Price 8.00

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