document.write( "Question 1177899: A local bank has determined that the daily balances of the checking accounts of its cut tomers are normally distributed with an average of $280 and a standard deviation of $20. What percentage of lances of more a. than $275? \"What percentage of its customers has daily balances of less than $243? ices is between What percentage of its customers' $241 and $301.60? \n" ); document.write( "

Algebra.Com's Answer #807093 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi\r\n" );
document.write( "Normal Distribution: μ = $280 and σ = $20.\r\n" );
document.write( "Using TI or similarly an inexpensive calculator like a Casio fx-115 ES plus\r\n" );
document.write( "P(x > 275) = 1 - P(x ≤ 275) = 1 - normalcdf(-9999, 275, 280, 20) = 1-.4013= .5787\r\n" );
document.write( "P(x  ≤ 243) = normalcdf(-9999, 243, 280, 20) = .0287\r\n" );
document.write( "P( 241 < x < 301.60) = normalcdf(241,301.60, 280, 20) = .8343\r\n" );
document.write( "Wish You the Best in your Studies.\r\n" );
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