Posted by Samantta on Saturday, August 1, 2009 at 11:36am.
If you are interested in determining the average of a 3minute telephone call to locations within the continental U.S. what sample size must you take to be 96% confidential that the results will be within $.75 of the true mean cost per call? From the phone company, you have gotten an estimate of=7.71?

business statistics  Mario, Tuesday, April 6, 2010 at 8:47pm
406
Answer This Question
Related Questions
 statistics  historically, the average customer spends $8.53 for all TGP ...
 math statistics  The average price of a gallon of unleaded regular gasoline was...
 math statistics  please help me I've waited for hours The average price of a ...
 statistics  One of the problems with a study such as this one is the small size...
 statistics  An IQ is designed so that the mean is 100 and the standard ...
 statistics  The head of a computer science department is interested in ...
 Statistics  A provincial politician would like to determine the average amount ...
 statistics  A provincial politician would like to determine the average amount ...
 math  Telephone company A charges $3.00 for the first minute of any long ...
 Statistics  An IQ test is designed so that the mean is 100 and the standard ...
More Related Questions