To describe the center and spread of the above distribution, the appropriate numerical measures are:the mean and the medianthe mean and the standard deviationthe IQR and the standard deviationthe median and the IQRAny of the above would be appropriate, it is just a matter of taste.

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

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?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122