Answer:
$9
Step-by-step explanation:
if 2/3 is $6, then 1/3 is going to be $3, so 3/3 is $9
According
to the empirical rule, if the data form a "bell-shaped" normal
distribution, approximately 99.7 percent of the observations will be contained
within 3 standard deviations around the mean.
<span>
To add, a bell curve is used to describe the mathematical concept called
normal distribution, sometimes referred to as Gaussian distribution. </span>
Yes, because only equal groups can be multiplied
