submarine is at the surface of the ocean preparing to dive .it submerges and dives to -993 feet. then. it has ascends 308 feet a to avoid hitting an undersea cliff. what interger represents the submarines position in feet(depth) after it ascends to aviod the cliff

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