Fewer young people are driving. in 1983, of -year-olds had a driver's license. twenty-five years later that percentage had dropped to (university of michigan transportation research institute website, april 7, 2012). suppose these results are based on a random sample of -year-olds in 1983 and again in 2008. a. at confidence, what is the margin of error and the interval estimate of the number of -year-old drivers in 1983? round your intermediate answers to four decimal places. margin of error (four decimal places)

What dimensions can créate more than one triangle ?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?