The accompanying data represent the pulse rates (beats per minute) of nine students. Treat the 9 students as a population. Compute the z-scores for all the students. Compute the mean and standard deviation of these z-scores. Student Pulse z-score1 762 613 604 805 726 807 808 689 73Complete the table z-score (round to the nearest hundredth as needed)The mean of z-score is The standard deviation of the z-scores is?

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?