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company A uses a new production method to manufacture air craft alimtimeters. A Simple random sample...

company A uses a new production method to manufacture air craft alimtimeters. A Simple random sample of new altimeters resulted in errord use 0.05 level of signeificance to test the claim that the new production method has error with standard deviation greater than 32.2ft

-42,78, -25,-75,-42,11,19,51,-9,-50,-108,-108

a)find the test statistic

b) determine the critical value

Math   Statistics-And-Probability   
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