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The 68-95-99.7 % rule is an approximation. It says that 95% of the data in a bell curve is contained within two standard deviations either
The 68-95-99.7 % rule is an approximation. It says that 95% of the data in a bell curve is contained within two standard deviations either side of the mean. What is the exact value (of z from the normal table) that contains 95% of the data.
Select one or more:
a.
2.33
b.
2.575
c.
1.96
d.
1.645
e.
3.5
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