Harry made fruit punch using 2 parts orange juice to 2 parts soda water. the amount of soda water that harry used is directly proportional to the amount of orange juice he used. how many cups of orange juice should harry use with 18 cups of soda water?

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