In a large business statistics class, the professor has each person select stocks by using computer-generated random numbers. the stocks were from a journal in which exactly half the publicly traded stocks went up and half went down. the students then check to see whether their stock rose or tell the next day and report their proportion of "successes". complete parts (a) through (d) below. a) the students use computer-generated random numbers to choose 16 stocks ea h. use the 68-95-99.7 rule to describe the sampling distribution model about 68% should have proportions between and about 95% between and and about 99.7% between and (type integers or decimals.)

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?