At Josie's gymnastics camp, the gymnasts spent 3 hours and 15 minutes on the balance beam and 2 hours and 50 minutes practicing vaulting.

Q. If the gymnastics camp ended at 3:55
P. M., what time did it start?

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