Answer:
and this Z-score is “unusual.”
Step-by-step explanation:
To calculate the Z score use the following formula
Where
μ is the average
is the standard deviation
x is the data to which we will calculate the z-score
In this case
So
A z-score is unusual if 
or 
Finally
and this Z-score is “unusual.”
Answer:
ummmmm illl ask my friend
Answer:
20 x 30 = 600
3,600/600=6
Check if it works
20 x 30 = 600
600 x 6 = 3,600
the missing width is 6
Step-by-step explanation:
Answer:
$2422
Step-by-step explanation:
2099/6.5=322.923076923 (were rounding that to 323)
so 2099+323=2422
