For the following set of data, find the population standard deviation, to the nearest thousandth.
25, 21, 17, 24, 22, 24, 17, 18, 20

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.