Conclusions from data - confidence intervals and margins of error
right answers only!

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?