Your father will be going to your grandparents house for dinner. he drives 40 minutws at a constant soeed of 30 miles per houer. he reaches the highway, quickly speeds up, and drives for another 30 minutes at a constant speed of 60 miles per hour. how far did you and your father travel altogether?

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