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Unformatted text preview: axis 2. Place P(r) values on the vertical axis Chapter7. Normal Curves and Sampling Distributions Key Words & Definitions Equations & Procedures Procedure to find Pr(a < x < b), when cont. var. x follows a normal distribution Step 1: Draw the normal curve for x. Then place given points , a, b on the x axis. Then shade the area above the points a & b Step 2: Convert continuous variable x in to continuous variable z by Step 3: Draw the normal curve for variable z and place 0, , on the z axis. Then shade the area above and Step 4: Find the shaded area in step3 by using table 3. The central limit theorem 1. If dist. of pop. x value is normal, then the dist. of the pop. value is normal. 2. If dist. of pop. x value is non-normal or unknown, then the dist. of the pop. of value in approx. normal. The approx. improves, as the sample size n increases. 3. 4. Jae Hwan Lee Stat 200 Review for continuing chapter...
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