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

2. Find the critical values

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 o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80% confidence; n= 30, s =0.27 mg Click the icon to view the table of Chi-Square critical values. df =(Type a whole number.)