Test the given claim. Assume that a simple random sample is selected from a normally distributed population. Use either the P-value method or the traditional method of testing hypotheses. Company A uses a new production method to manufacture aircraft altimeters. A simple random sample of new altimeters resulted in errors listed below. Use a 0.05 level of significance to test the claim that the new production method has errors with a standard deviation greater than 32.2 ft, which was the standard deviation for the old production method. If it appears that the standard deviation is greater, does the new production method appear to be better or worse than the old method? Should the company take any action? -44, 76, -25, -70, 40, 11, 19, 54, -5, -54, -108, -108 Find the test stat x=0 (Round to two decimal places as needed.). Determine the critical value(s). The critical value(s) is/are (Use a comma to separate answers as needed. Round to two decimal places as needed.) Since the test statistic is greater than the critical value(s), evidence to support the reject Ho. There is sufficient claim that the new production method has errors with a standard deviation greater than 32.2 ft. The variation appears to be the new method appears to be greater worse than in the past, so because there will be

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Test the given claim. Assume that a simple random sample is selected from a
normally distributed population. Use either the P-value method or the traditional
method of testing hypotheses.
Company A uses a new production method to manufacture aircraft altimeters. A
simple random sample of new altimeters resulted in errors listed below. Use a
0.05 level of significance to test the claim that the new production method has
errors with a standard deviation greater than 32.2 ft, which was the standard
deviation for the old production method. If it appears that the standard deviation
is greater, does the new production method appear to be better or worse than
the old method? Should the company take any action?
-44, 76, -25, -70, 40, 11, 19, 54, 5, -54, 108, 108
Find the test statistic.
x² =
(Round to two decimal places as needed.).
Determine the critical value(s).
The critical value(s) is/are
(Use a comma to separate answers as needed. Round to two
decimal places as needed.)
Since the test statistic is greater than
the critical value(s),
reject Ho. There is
sufficient
evidence to support the
claim that the new production method has errors with a standard
deviation greater than 32.2 ft.
The variation appears to be
greater
the new method appears to be worse
than in the past, so
because there will be
Transcribed Image Text:Test the given claim. Assume that a simple random sample is selected from a normally distributed population. Use either the P-value method or the traditional method of testing hypotheses. Company A uses a new production method to manufacture aircraft altimeters. A simple random sample of new altimeters resulted in errors listed below. Use a 0.05 level of significance to test the claim that the new production method has errors with a standard deviation greater than 32.2 ft, which was the standard deviation for the old production method. If it appears that the standard deviation is greater, does the new production method appear to be better or worse than the old method? Should the company take any action? -44, 76, -25, -70, 40, 11, 19, 54, 5, -54, 108, 108 Find the test statistic. x² = (Round to two decimal places as needed.). Determine the critical value(s). The critical value(s) is/are (Use a comma to separate answers as needed. Round to two decimal places as needed.) Since the test statistic is greater than the critical value(s), reject Ho. There is sufficient evidence to support the claim that the new production method has errors with a standard deviation greater than 32.2 ft. The variation appears to be greater the new method appears to be worse than in the past, so because there will be
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