Amine extracts 2 metric tons of coal in an hour. the mine uses 14 ton of the extracted coal every hour to generate electricity for the mine and sells the rest. if t is the number of hours spent mining, which expression represents the amount of ore sold? how much ore can the mine sell after extracting ore for 12 hours?

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