A simple random sample of 25 filtered 100 mm cigarettes is obtained and the tar content of each cigarette is measured The sample

Question

A simple random sample of 25 filtered 100 mm cigarettes is obtained and the tar content of each cigarette is measured The sample has a mean of 20 2 mg and a standard deviation of 3 35 mg Use a 0 05 significance level to test the claim that the mean tar content of filtered 100 mm cigarettes is less than 21 1 mg which is the mean for unfiltered king size cigarettes Assume that a simple random sample has been selected from a normally distributed population What are the hypotheses OA Ho 21 1 mg H 21 1 mg OC Ho H 21 1 mg H 21 1 mg Identify the test statistic Round to three decimal places as needed Identify the P value The P value is Round to four decimal places as needed State the final conclusion that addresses the original claim Choose the correct answer below OB Ho 21 1 mg H 221 1 mg OD Ho 21 1 mg H 221 1 mg O A Reject Ho There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21 1 mg OB Fail to reject Ho There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21 1 mg C

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