An artice in the October 1I, 2006, issue of the Washington Post caimed that 15 % of high school students used oure witng on the portion of the SAT exam in the academic year 2005-2006. Suppose thhat you want to designasudy to estimate thin proportion for the u year. a. How many essays would you need to sample to estimate this proportion to within 0.06 with 99 % confidence ( the 200m proportion as a reasonable starting guess for how the following year's proportion wil tun out.) Round your answer to the nearest integer. 940 Your sample size should be at least 0.06 with 99% ntden

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: