26. The mean of normally distributed test scores is 82 and the standard deviation is 5. If there are 153 test scores in the
data sample, how many of them were in the 82 to 97 range?

Witch represents the inverse of the function f(x)=1/4x-12

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.