what grade is this because apparently i like to know what grade it is before i solve it
Answer: 
Explanation:
Given : Sample size : n= 30 , it means it is a large sample (n≥ 30), so we use z-test .
Significance level : 
Critical value: 
Sample mean : 
Standard deviation : 
The formula to find the confidence interval is given by :-

i.e. 
i.e. 

Hence, the 95% confidence interval for the mean mpg in the entire population of that car model = 
PE, GO, XY - I am probably wrong xoxoxoxoxxo
Answer:
The atoms share some of their outer electrons so that each atom has a stable noble gas arrangement.
Explanation:
Answer:
With billions of moving particles colliding into each other, an area of high energy will slowly transfer across the material until thermal equilibrium is reached (the temperature is the same across the material).