A simple random sample of 28 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. Find the test statistic. x = (Round to three decimal places as needed.) b. Find the P-value of the test statistic. The P-value of the test statistic is. (Round to three decimal places as needed.) c. State the conclusion. V sufficient evidence to conclude that the tar content of filtered 100-mm cigarettes has a Họ. There standard deviation different from 0.30 mg.

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