An arts academy required there to be 4 teachers for every 64 students and 6 tutors for every 48 students. How many students does the academy have per teacher? Per tutor? How many teachers does the academy need if it has 96 students?

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