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If the mean weight of some data is 22 and the standard deviation is 2. what percent of the data will weigh more than 20 pounds?

If the mean weight of some data is 22 and the standard deviation is 2. what percent of the data will weigh more than 20 pounds?

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84.1%.  http://en.wikipedia.org/wiki/Standard_deviation

Added:

50% of the weights will be above the mean.  34.1% will be below the mean by one standard deviation or less.

Help me out here. It's been a long time.

The area encompassed by one SD on either side of the midline of the Gaussian curve is about 64% of the total. So half of that 32% + 50% gives you your answer.

Is that how you did this?

Gratitude as a discipline involves a conscious choice.....* Victims of circumstance owe it to fate. Victims of choice owe it to themselves.*One of the widest gaps in human experience is the gap between what we say we want to be and our willingness to discipline ourselves to get there.

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