a highway speed monitor is located on the side of the road that has a speed limit of 45 mph, the system records the speeds of passing vehicles. the data below shows the average speeds of the first 9 cars that pass. 46 56 45 44 45 61 55 53 39 what is the standard deviation to the nearest 10th based on the posted speed limit of 45 mph?

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