Question Chester rode his bike uphill 30 miles and then back downhill at 1 mph faster than his uphill speed. If it took
him 1 hours longer to ride uphill than downhill, what was his uphill rate?

4. jake needs to score in the top 10% in order to earn a physical fitness certificate. the class mean is 78 and the standard deviation is 5.5. what raw score does he need? z value for top 10% =1.282 how do i get the z value? what is the equation for this? raw score =mean+z*sd = 78+1.282*5.5 = 85.051