quiz3-key - CHE 4253 Quiz 3 Instructor Dimitrios V...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 4253 - Quiz 3 Instructor: Dimitrios V. Papavassiliou October 24, 2006 Name:………………………. OU ID:……………………… Answer all questions and show your calculations, if any are necessary. 1. (15 points) If the profit probability density function is shown by the following figure, what is the Expected Profit for this process? What it the standard deviation of this probability density function and what is the coefficient of variation? Mean value= -2*0.05+(-1)*0.1+0*0.2+1*0.25+2*0.2+3*0.1+4*0.05+5*0.05=1.2 Standard deviation= [(-2-1.2) 2 *0.05+(-1-1.2) 2 *0.1+(0-1.2) 2 *0.2+(1-1.2) 2 *0.25+(2- 1.2) 2 *0.2+(3-1.2) 2 *0.1+(4-1.2) 2 *0.05+(5-1.2) 2 *0.05] 1/2 = [0.512+0.484+0.288+0.01+0.128+0.324+0.392+0.722] 1/2 =2.86 1/2 = 1.691 Coef. of variation = standard dev/mean value = 1.41 CHE 4253 Quiz-3, Page 1 of 3 Probability 0.3 0.2 0.1 -2 -1 0 1 2 3 4 5 Profit, $10 5
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2. (10 points) A company must purchase a reactor to be used in an overall operation. Four reactors have been designed, all of which are equally capable of giving the required service. The
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

quiz3-key - CHE 4253 Quiz 3 Instructor Dimitrios V...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online