Frazier has $1,200 in savings. he works because he is saving money for college, and he earns $9 an hour. if frazier saves 25 percent of his net pay, after 20 percent is taken out for tax, identify the expression which represents frazier's savings. a) 1.8x + 1,200 b) 3.6x + 1,200 c) 7.2x + 1,200 d) 9x + 1,200

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