Question

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? negative 44, 78, negative 25, negative 75, negative 40, 13, 15, 52, negative 9, negative 50, negative 107, negative 107 What are the null and alternative hypotheses? A. H0: sigmaequals32.2 ft H1: sigma not equals32.2 ft B. H0: sigmaequals32.2 ft H1: sigma greater than32.2 ft C. H0: sigma greater than32.2 ft H1: sigmaequals32.2 ft D. H0: sigma less than32.2 ft H1: sigmaequals32.2 ft E. H0: sigmaequals32.2 ft H1: sigma less than32.2 ft F. H0: sigma not equals32.2 ft H1: sigmaequals32.2 ft Find the test statistic. chi squared equals nothing (Round to two decimal places as needed.) Determine the critical value(s).Since the test statistic is (between,greater, less than or equal to) the critical value, (reject or fail to reject) Ho. There is (sufficient or insufficient) evidence to support the claim that the new production method has errors with a standard deviation greater than 32.2ft. The variation appears to be (about the same, less or greater) than in the past, so the new method appears to be (worse,similar or better), because there will be (the same number of, more or less) altimeters that have errors. Therefore, the company (should or should not) take immediate action to reduce the variation.

Answer #1

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...

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...

A manufacturing company makes aircraft altimeters.
These devices are tested in a pressure chamber,
and errors in altitude are recorded as either positive (for
readings that are too high) or negative (for readings
that are too low). Using a long established production
method, the errors for these devices were normally
distributed with a standard deviation of 47.3 ft.
Now, a new production method is to be used; however, there is
some concern that the new method produces
less accurate altimeters....

A manufacturing company makes aircraft altimeters.
These devices are tested in a pressure chamber,
and errors in altitude are recorded as either positive (for
readings that are too high) or negative (for readings
that are too low). Using a long established production
method, the errors for these devices were normally
distributed with a standard deviation of 47.3 ft.
Now, a new production method is to be used; however, there is
some concern that the new method produces
less accurate altimeters....

A simple random sample of 29 filtered 100-mm cigarettes is
obtained from a normally distributed population, and the tar
content of each cigarette is measured. The sample has a standard
deviation of 0.18 mg. Use a 0.01 significance level to test the
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deviation for unfiltered king-size cigarettes. Complete parts (a)
through (d) below. a. What are the null and...

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standard deviation different from 43.7 ft.

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0.05 significance level to test the claim that...

Assume that a simple random sample has been selected from a
normally distributed population and test the given claim. Identify
the null and alternative? hypotheses, test? statistic, P-value, and
state the final conclusion that addresses the original claim. A
simple random sample of 25 filtered 100 mm cigarettes is? obtained,
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Assume that a simple random sample has been selected from a
normally distributed population and test the given claim. Use
either the traditional method or P-value method as indicated.
Identify the null and alternative hypotheses, test statistic,
critical value(s) or P-value (or range of P-values) as appropriate,
and state the final conclusion that addresses the original claim. A
public bus company official claims that the mean waiting time for
bus number 14 during peak hours is less than 10 minutes....

Assume that a simple random sample has been selected from a
normally distributed population and test the given claim. Identify
the null and alternative? hypotheses, test? statistic, P-value, and
state the final conclusion that addresses the original claim.
A simple random sample of 25 filtered 100 mm cigarettes is
obtained, and the tar content of each cigarette is measured. The
sample has a mean of 19.6 mg and a standard deviation of 3.24 mg.
Use a 0.05 significance level to...

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