What is the interquartile range of the data?
100, 120, 130, 188, 196, 220, 265, 300
145
200
117.5
242.5

What is the value of x? 3x + (6x - 6) = 4(2x-2)

What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14

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?