Asimple random sample of 26 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 0.20 mg. use a 0.05 significance level to test the claim that the tar content of filtered 100-mm cigarettes has a standard deviation different from 0.30 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? a. h0: sigmagreater than0.30 mgupper h 1 : sigma less than or equals 0.30 mgb. h0: sigmaequals0.30 mgupper h 1 : sigma not equals 0.30 mgyour answer is correct. c.h0: sigmanot equals0.30 mgupper h 1 : sigma equals 0.30 mgd. h0: sigmaequals0.30 mgupper h 1 : sigma less than 0.30 mgb. find the test statistic.