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Posted by on Thursday, October 9, 2008 at 11:31pm.

The amount of time Ricardo spends brushing his teeth follows a Normal Distribution with unknown mean and standard deviation. Ricardo spends less than one minute brushing his teeth about 40% of the time. He spends more than two minutes brushing his teeth 2% of the time. Use this information to determine the mean and standard deviation of this distribution.

  • Stats - , Monday, October 27, 2014 at 7:17pm


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