Ari walked 2 and 3/4 miles at a constant speed of 2 and 1/2 miles per hour. beth walked 1 and 3/4 miles at a constant speed per hour. cindy walked for 1 hour and 21 minutes at a constant speed of 1 and 1/8 miles per hour. list the three people in order of the times they spent walking from least time to greatest time.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables