Test the given claim. Assume that a simple random sample is selected from a normally distributed population. Use either
Posted: Wed May 11, 2022 6:44 am
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. Find the test statistic.
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?
−42, 77, −20, −74, −42, 15, 16, 53, −8, −53, −109,
−109
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. Find the test statistic.
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?
−42, 77, −20, −74, −42, 15, 16, 53, −8, −53, −109,
−109