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The mean of a normal probability distribution is 400; the standard deviation is 10. a. About 68% of the observations lie between what two values?
The mean of a normal probability distribution is 400; the standard deviation is 10. |
a. | About 68% of the observations lie between what two values? |
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Value 2 |
b. | About 95% of the observations lie between what two values? |
Value 1 | |
Value 2 |
c. | Practically all of the observations lie between what two values? |
Value 1 | |
Value 2 |
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