Sales of existing homes in the United States rose continuously over the period 2011-2013 at the rate of 8.9per year from 43 million in 2011. Write down a fomula that predicts sales of existing homes tyears after 2011. Use your model to estimate to the nearest 0.1 million, sales of existing homes in 2012 and 2014

Which of the following graphs could represent a cubic function?

How can you find the mean absolute deviation (mad) for this set of data?

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr