Use the given information to find the number of degrees of freedom, the critical values x and x, and the confidence interval estimate of a. It is reasonable to assume that a simple random sample has...

Extracted text: Use the given information to find the number of degrees of freedom, the critical values x and x, and the confidence interval estimate of a. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution Nicotine in menthol cigarettes 95% confidence; n= 22, s=0.28 mg. E Click the icon to view the table of Chi-Square critical values. df =(Type a whole number.)