Question

Use the traditional method to test the given hypothesis. A manufacturer uses a new production method...

Use the traditional method to test the given hypothesis. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standard deviation of 2.3 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard deviation for the old method.

answer options:

There is not sufficient evidence to warrant rejection of the claim that the standard deviation is different from 3.5.

There is sufficient evidence to support the claim that the standard deviation is different from 3.5.

There is not sufficient evidence to support the claim that the standard deviation is different from 3.5.

There is sufficient evidence to warrant rejection of the claim that the standard deviation is different from 3.5.

Math   Statistics-And-Probability   
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Answer #1

Answer: There is sufficient evidence to support the claim that the standard deviation is different from 3.5.

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