To be considered as a menu item for gloria's new restaurant an item must have scored in the top 15% by the food critics in the area. the average item's score is 7 with a standard deviation of 2. assuming that the variable is normally distributed, find the lowest score possible for a menu item to still be considered?

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