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MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,
Feb-1999 - Mar-2006
MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,University of California
Feb-1999 - Mar-2006
PR Manager
LSGH LLC
Apr-2003 - Apr-2007
Power+, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 36 hours and a standard deviation of 5.2 hours. As a part of its quality assurance program, Power+, Inc. tests samples of 9 batteries.
   Â
(a)What can you say about the shape of the distribution of the sample mean?    NormalBinomialUniform        Â
(b)What is the standard error of the distribution of the sample mean? (Round your answer to 4 decimal places.)
            Standard error        Â
(c)What proportion of the samples will have a mean useful life of more than 38 hours? (Round z value to 2 decimal places and final answer to 4 decimal places.)
            Probability Â
(d)What proportion of the sample will have a mean useful life greater than 34 hours? (Round z value to 2 decimal places and final answer to 4 decimal places.)
           Probability Â
(e)What proportion of the sample will have a mean useful life between 34 and 38 hours? (Round z value to 2 decimal places and final answer to 4 decimal places.)
           Probability Â
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