Answer:
x a anser is a
Step-by-step explanation:
Answer:
92 km/h
Step-by-step explanation:
Answer:
first is no second is yes third is no fourth is yes
Step-by-step explanation:
I'm not sure btw
Answer:
(a) σ² = 144
(b) s² = 12
Step-by-step explanation:
(a) Population variance σ² = ∑(X -
)² / N
The arithmetic mean 


σ² = 
= 
= 
= 
σ² = 144
(b) 

= 12
8 units
(This is how I get the answer)