Friday
April 18, 2014

Homework Help: Math Help Please!!!!

Posted by Taylor on Saturday, February 23, 2013 at 8:39pm.

The breaking strengths (say, y) for one foot square samples of a particular synthetic fabric are approximately normally distributed with a mean of 2280 pounds per square inch and a standard deviation of 10.6 psi.

a) find the probability of selecting a 1 foot square sample of material at random that on testing would have a breaking strength in excess of 2240 psi.

b)what is the breaking strength value in psi that separates the strongest 20% of one foot square samples from the weakest 80%?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

American National Government - What is the American political system's greatest ...
Strategic - which comes first, the development of the long-term objectives, or ...
U.S. History to 1865 - What are some strenghts and weaknesses of the ...
Business - Consider the trash bag problem. Suppose that an independent ...
Statistics - Consider the trash bag problem. Suppose that an independent ...
myths - In the archetypal heroic quest, the hero A. goes on a quest to ...
Chemistry - I saw this sentence,"Most metals are strong and can be hit without ...
Leadership - I'm having trouble with this question: What do you think your ...
business studies - please can anyone help me with a report question i have to ...
Chemistry - Had a recent mix-up when I re-read my chemistry notes, and trying to...

Search
Members