Runners in a half marathon entered in three waves . There were 341 runners in the first wave 295 runners in the the face ? Second wave , and 316 runners in the third wave ; If seven out of eight runners finished the rate , how many did not finish

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