Answer:


And based on this the best answer would be:
a. mean = 4; standard deviation = 2.68
Step-by-step explanation:
For this case we have the following data given:
1,5,8,5,1
We can find the sample mean with the following formula:

And replacing we got:

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

And replacing we got:

And based on this the best answer would be:
a. mean = 4; standard deviation = 2.68
Answer:
1/16
Step-by-step explanation:
Hope This Helps :)
Plz Mark Brainliest!!!
Answer:
Practice!
Step-by-step explanation:
Seriously, ask friends or family for complete random questions. Ask your teacher for tips.
Answer:
9
Step-by-step explanation:
Using the rule of radicals
×
⇔ 
Simplify the radicals

= 
=
× 
= 2

= 
=
× 
= 3
Then
3
+ 
= 3(2
) + 3
= 6
+ 3
= 9