Your school's talent show will feature 12 solo acts and 3 ensemble acts. the show will last 108 minutes. the 6 solo
performers judged best will give a repeat performance at a second 72 minute show, which will also feature the 3 ensemble
acts. each solo act lasts x minutes, and each ensemble act lasts y minutes. use this information to answer parts (a) and
(b)

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