Question: J < 4. Find the 95% confidence interval for the standard deviation of the ni ' manufactured if a random sample of 41 cigarettes has

J" < 4. Find the 95% confidence interval for the standard deviation of the ni ' manufactured if a random sample of 41 cigarettes has a variance of need to be normally distributed? Sketch the graph. gr; aa /7 .: C// ,o C * 95%5. Of 125 randomly selected adults, 29 Were found to have high blood pressure. 3) Calculate the point estimate and the margin of error for a 99% confidence interval for the true percentage of all adults that have high blood pressure; b) Construct a 99% confidence interval; 0) Explain what "99% confidence" means

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