Refer to the U. S. population (USPOP) data in Appendix C. Construct a two-stage cluster sampling estimate of the total population in the United States for 2010 by first sampling divisions and then sampling states within divisions. Sample four of the nine divisions and at least two states within each sampled division. Compute an estimate of the variance attached to your estimator. Would you recommend this procedure over stratified random sampling

Find the actual dimensions of the box. the side length are in meters and integers. the surface area of the box is 104 m2 and volume of the box is 60 m3.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?