A bird flies from the bottom of a canyon that is 59 1/5 feet below sea level to a nest that is 620 3/5 feet above sea level. What is the difference in elevation between the bottom of the canyon and the bird's nest? The difference between the elevation of the canyon and the bird's nest is ___ feet. (Simplify your answer. Type an integer, proper fraction, or mixed number.)

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