4^7 / 4^9 a.) -16 b.) 1/16 c.) 1/8 d.) 8 i've tried different methods of figuring it out but i can't get it? ! you! : )

With both problems. a.s.a.p directions on photo ^

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

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss