22 Jun WHAT DO THE RESULTS SUGGEST. IF ANYTHING ABOUT THE EFFECTIVENESS OF THE FILTERS?
A simple random sample of 25 filtered 100mm cigarettes is obtained and the tar content of each cigarette is measured. The sample size has a mean of 19.2 mg and a standard deviation of 3.81 mg. Use a .05 significance level to test the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg (the mean of unfiltered king size cigs). What do the results suggest about the effectiveness of the filters?
A. What are the hypothesis? B. Identify the test statistic. t= C. Identify the P-value The P-value is D. State the final conclusion that addresses the original claim. Choose the correct answer below. 1. Fail to reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.2 mg 2. Reject H0. There is sufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.2 mg 3. Fail to reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.2 mg 4. Reject H0. There is insufficient evidence to support the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.2 mg
E. What do the results suggest. If anything about the effectiveness of the filters? 1. The results suggest that the filters are effective 2. The results are inconclusive because the sample size is less than 30 3. The results suggest that the filters increase the tar content 4. The results suggest that the filtered cigarettes have the same tar content as unfiltered king size cigarettes 5. The results do not suggest that the filters are effective
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