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Asume that a simple random sample has been selected from a normal distribution population and test the given claim.
Asume that a simple random sample has been selected from a normal distribution population and test the given claim. Identify the null and alternative hypothesis test statistics P value and state the final conclusion that addresses the original claim . 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 19.4 mg and a standard deviation of 3.51 mg . Use a 0.05 significance level to test the claim that the mean tar content of a filtered 100 mm cigarettes is less than 21.1 mg which is the mean for unfiltered king-size cigarettes what do the results suggest if any about the effectiveness of the filters
please round out four decimal place on your answers thank you