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
Answer:
D) 35, 38, 41, 44, 47, 50,...
Step-by-step explanation:
The general term of an arithmetic sequence is
, where n ∈N and n ≥ 1.
When n=1,
When n=2,
When n=3,
When n=4,
When n=5,
When n=6,
Hence the sequence is 35, 38, 41, 44, 47, 50,...
The correct answer is D
Answer:
2/3
Step-by-step explanation:
if max runs 2 hours she will have 3 because 1 hour 30 times 2 is 3 hours
The rule is +4
how did you find it you can 87-91=4
so that is your rule +4
