During his high school football career a running back averaged 81 yards/game with a standard deviation of 22 yards/game. The distribution of his yards was approximately Normal.

What percent of his performances would you expect to be between 81 and 147 yards?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point