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31 July 2010

• 12:0112:01, 31 July 2010 Problem 5-1, Factorial designs (hist | edit) [11,177 bytes] Statadmin (talk | contribs) (Created page with '==Problem Statement== ''The yield of a chemical process is being studied. The two most important variables are thought to be the pressure and the temperature. Three levels of eac…')
• 11:5811:58, 31 July 2010 Problem 4-1, Randomized blocks (hist | edit) [7,214 bytes] Statadmin (talk | contribs) (Created page with '==Problem Statement== ''A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bo…')
• 11:1111:11, 31 July 2010 Problems 3-1 through 3-3, Analysis of variance (hist | edit) [17,208 bytes] Statadmin (talk | contribs) (Created page with 'We will provide solutions for problems 3-1, 3-2 and 3-3 in this tutorial. ==Problem statement== ===Problem 3-1=== ''The tensile strength of portland cement is being studied. Fou…')
• 09:5209:52, 31 July 2010 Problem 2-4, Determining required sample size (hist | edit) [1,432 bytes] Statadmin (talk | contribs) (Created page with '===Problem Statement=== ''A normally distributed random variable has an unknown mean <math>\mu</math> and a known variance <math>\sigma^2=9</math>. Find the sample size required…')
• 09:4309:43, 31 July 2010 Problem 2-2, Comparing a single mean to a specified value (second example) (hist | edit) [5,237 bytes] Statadmin (talk | contribs) (Created page with '==Problem Statement== ''The viscosity of a liquid detergent is supposed to average 800 centistokes at 25 °C. A random sample of 16 batches of detergent is collected, and the ave…')
• 08:5708:57, 31 July 2010 Problem 2-1, Comparing a single mean to a specified value (hist | edit) [8,902 bytes] Statadmin (talk | contribs) (Created page with '==Problem statement== ''The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the standard deviation of breaking strength is σ …')