In a batch of 280 water purifiers,12 were found to be defective. what is the probability that a water purifier chosen at random will be defective.

The number of electoral votes each state is assigned is determined by the size of its population every ten years. the chart shows the number of electoral votes california was assigned each decade of the past century. what is the 3rd quartile of the data?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31