At a soda bottling factory, the nominal filling specifications (goal) is 16 fl. Ounces. A sample of 20 bottles is tested with the following results: X-bar = 16.13 fl oz; s = 0.24 fl oz; What interval would allow you to say, with a 95% confidence, that the interval contains the actual mean of the filling process? 

Question 2 An automated computer attendant is supposed to respond to all inquiries within 15 seconds. The company claims with a 99% confidence that the average response time is less than 17 seconds. A random sample of 25 calls reveals that X-bar = 13.5 sec, and s = 0.95 sec. Based on this data, is the company correct? 

Question 3 A photography developing machine uses ink to produce photographs. A sample of 15 pictures showed an average of 15 ml of ink used per picture, with a standard deviation of 0.075 ml. Develop a 99% confidence band for the actual amount of ink used by the machine to produce each photograph