Image point n'(12, -6) was dilated from the pre-image point n(4, -2). what was the scale factor used?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Use set buikder notation to represent the following set: {, -2, -1, 0}

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.