1. State the null hypothesis and the alternative hypothesis. 2. What should be used as test statistic? Give the formula for the test statistic. 3. State the decision rule. (example: Reject the null hypothesis if the...) 4. Determine the value of the test statistic. 5. What is your decision regarding the null hypothesis? 6. Interpret, in a single sentence, the result of the statistical test.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Jamestown Steel Company manufactures
and assembles desks and other office equip-
ment at several plants in western New York
state. The weekly production of the Model
A325 desk at the Fredonia Plant follows a
normal probability distribution with a mean of
200 and a standard deviation of 16. Recently,
because of market expansion, new produc-
tion methods have been introduced and new
employees hired. The vice president of man-
ufacturing would like to investigate whether
there has been a change in the weekly production of the Model A325 desk. Is the
mean number of desks produced at the Fredonia Plant different from 200 at the
.01 significance level?
Assuming you picked a sample of 50 desks and
computed a sample mean of 203.50, you are now
starting to perform hypothesis testing.
1. State the null hypothesis and the alternative
hypothesis.
2. What should be used as test statistic? Give the
formula for the test statistic.
3. State the decision rule. (example: Reject the null
hypothesis if the...)
4. Determine the value of the test statistic.
5. What is your decision regarding
hypothesis?
the null
6. Interpret, in a single sentence, the result of the
statistical test.
Transcribed Image Text:Jamestown Steel Company manufactures and assembles desks and other office equip- ment at several plants in western New York state. The weekly production of the Model A325 desk at the Fredonia Plant follows a normal probability distribution with a mean of 200 and a standard deviation of 16. Recently, because of market expansion, new produc- tion methods have been introduced and new employees hired. The vice president of man- ufacturing would like to investigate whether there has been a change in the weekly production of the Model A325 desk. Is the mean number of desks produced at the Fredonia Plant different from 200 at the .01 significance level? Assuming you picked a sample of 50 desks and computed a sample mean of 203.50, you are now starting to perform hypothesis testing. 1. State the null hypothesis and the alternative hypothesis. 2. What should be used as test statistic? Give the formula for the test statistic. 3. State the decision rule. (example: Reject the null hypothesis if the...) 4. Determine the value of the test statistic. 5. What is your decision regarding hypothesis? the null 6. Interpret, in a single sentence, the result of the statistical test.
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