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 claim that the tar content of filtered 100-mm cigarettes has a standard deviation different from 0.25 mg, which is the standard deviation for unfiltered king-size cigarettes. Complete parts (a) through (d) below. a. What are the null and alternative hypotheses? O A. Ho: o =0.25 mg H:o<0.25 mg O B. Ho: o+0.25 mg H1: o = 0.25 mg OC. Ho: o> 0.25 mg H:os0.25 mg O D. Ho: o= 0.25 mg H: o 0.25 mg

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