The world’s Largest Sharp Brain Virtual Experts Marketplace Just a click Away
Levels Tought:
University
| Teaching Since: | Apr 2017 |
| Last Sign in: | 474 Weeks Ago, 6 Days Ago |
| Questions Answered: | 9562 |
| Tutorials Posted: | 9559 |
bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
9.30 An urn contains an unknown proportion of red and white marbles. A random sample of 60 marbles selected with replacement from the urn showed that 70% were red. Find the (a) 95%, (h) 99%, and (c) 99.73% confidence limits for the actual proportion of red marbles in the urn. Present the results from using both the approximate formula and the more exact formula of Problem 9.12.
9.31 How large a sample of marbles should one take in Problem 9.30 in order to be (a) 95%, (h) 99%; and (c) 99.73% confident that the true proportion does not differ from the sample proportion by more than 5%?
-----------