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March 5, 2015

March 5, 2015

Posted by **Anonymous** on Monday, June 4, 2012 at 8:12pm.

B) In a group of 250 bags,how many would you expect to weigh more than 50.4 lb?

- Statistics -
**drwls**, Tuesday, June 5, 2012 at 3:38amThat would be 2 sigma or more above the mean.

2.5% is 2 sigma or more above the mean

2.5% is 2 sigma or more below the mean

95% is between the 2 sigma points (49.6 to 50.4 in this case)

It's something worth remembering

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