problemset_2008-8_key

problemset_2008-8_key - Problem Set 7 EMA 4714 - Materials...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Problem Set 7 EMA 4714 - Materials Selection and Failure Analysis KEY Due Wednesday, March 27, 2002 - 11:45 am Dieter Exercise 10.9 If 10 percent of the parts produced by a screw machine are defective, what is the probability that, out of 5 parts selected at random, none of the parts will be defective? ************************************************************************** probability of a defective part, p = 0.10; r = 0 probability of a good part, q = 1 - p = 0.90; n = 5 infinite population, binomial distribution assumed: P(r=0) = [5!][0.1) (0.9) 5 /[0!(5-0)!] = 0.59 Dieter Exercise 10.13 In an experiment to determine whether there is an effect of specimen diameter on RAT [reduction in area, tensile test], the following data were obtained: Is the difference in the means for the two tests statistically significant? [Note that the variances are not significant different.] ************************************************************************** H : 1- 2 = d = 0 where 1 = 0.252-inch diameter, 2 = 0.505-inch diameter specimens= d = 0 where 1 = 0....
View Full Document

This note was uploaded on 07/24/2011 for the course EMA 4714 taught by Professor Staff during the Spring '08 term at University of Florida.

Page1 / 2

problemset_2008-8_key - Problem Set 7 EMA 4714 - Materials...

This preview shows document pages 1 - 2. Sign up to view the full document.

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