Ileana received a statement on her Certificate of Deposit showing that her investment had returned $5,084 over its life. If the Certificate of Deposit pays a simple interest rate of 4.1% and her initial investment was $15,500, how long had the money been invested?

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