Kate's garden measures 15 yards by 12 yards. in order to make a path around it she will need to reduce the size of her garden. the dimensions of the smaller garden will be related by a scale factor of 0.7. what is the area of the path around the garden in square yards?

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