Posted by Anonymous on Tuesday, April 23, 2013 at 10:46pm.
The daily sales of a retail store are normally distributed with a standard deviation of $500. If the probability that sales will be less than $10,000 in any one day is 40%, what are the mean daily sales?

statistics  Anonymous, Wednesday, April 24, 2013 at 5:46am
Its one of these!
$9,873.35
$10,126.65
$12,533.65
None of the above 
statistics  lk, Wednesday, April 24, 2013 at 7:13am
$12,553.65

statistics  d, Tuesday, September 10, 2013 at 11:13pm
9,873.35

statistics  Bob, Monday, September 15, 2014 at 8:50pm
$10,126.65

statistics  Nic, Tuesday, September 16, 2014 at 7:07am
$12,533.65

statistics  Lachlan, Tuesday, April 21, 2015 at 9:25pm
$10,126.65

statistics  Anonymous, Wednesday, April 22, 2015 at 12:00am
None of the above