Apost card has an area of 24 square inches. two enlargements of the postcard have áreas if 54 square inches and 96 square inches. in each postcard the length of 1 1/2 times the width. which of the following could be the dimension of the postcard or one of the enlargements

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