A certain company started the day with a stock value 68 1/5 points. Over the next four days, the stock had a drop of 1/5 point, a drop of 2/5 point, a rise of 11/5 points, and a rise of 2/5 point. What was the value of the stock after the four days?

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to