Unformatted text preview: that they will win at least one medal? 3. (25 points) The mass fraction of an impurity in a polymer, X , has the following probability density function: ( ) (2 0 1) for 0.1 < < 0.3 f X C X . X ± a. (10 points) What is the value of C ? b. (15 points) Determine the value of X for which there is a probability of 0.1 that the impurity is greater than this value. 4. (25 points) The weight of a bag of solid pellets filled by a machine is normally distributed with a standard deviation of 0.07 kg and a mean value which can be set by the machine operator. At what value should the mean be set if it is desired that only 2% of the bags weigh less than 12 kg? THE END...
View
Full Document
 Spring '06
 Dale
 Normal Distribution, Standard Deviation, Variance, Probability theory, Santa Barbara, Department of Chemical Engineering University of California

Click to edit the document details