Brian uses an angle-measuring device on a 3-foot tripod to find the height, h, of a weather balloon above ground level, as show in the diagram. The balloon is at a angle of elevation. A radio signal from the balloon tells Brian that the distance between the tripod and the balloon is 25,000 feet. Determine the total height of the balloon.

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