The empirical rule tells you 68% of normally-distributed observations are within 1 standard deviation of the mean.
_____
This is a number you may want to memorize, along with the numbers for 2 (95%) and 3 (99.7%) standard deviations.
Answer:
d
Step-by-step explanation:
Answer:
2x+5=31 is the most common correct answer
Answer:
B
Step-by-step explanation:
The exponential function 
shows the exponential growth if 
Consider choice B.
If x=1, then 
if x=2, then 
if x=3, then 
if x=4, then 
This means that the function 
represents the table B.
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