Hila is asked to draw an equilateral triangle ABC. First, she draws a horizontal line segment that she labels AB, and it has a length of 8 cm. What could her next step be? Use a protractor to measure a 60° angle that has A as its vertex. Use a protractor to measure a 60° angle that has the new point C as its vertex. Draw another 8 cm segment up from A to a new point C. Draw another 8 cm segment up from B to a new point C.

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