Assume that a simple random sample has been selected froma normally distributed population and the test given claim.Identify the nulla nd alternative hypotheses,test statistics,pvalue,critical value and state the final conclusion that the addresse the original claim. A simple random sample of 25 filtered 100 cigaretes is obtained and the tar content of each cigarette is measured.The sample has a mean of 19.2 mg and a standard devaition of 3.69mg.Use a 0.05 significance level to test the claim that the mean tar content off filtered 100 mm. cigarette is less than 21.11 mg which is the mean for unfiltered king size cigarettes.What do the results suggest,If anything about the effectivenes of the filter