Two trains leave the station at the same time one heading east and one heading west the eastbound train travels 80 miles per hour the westbound train was traveling 100 miles per hour how long will it take for the two trains to be 396 miles apart?

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?