Answer:
standard error of the mean (S.E) = 0.06
Step-by-step explanation:
<u><em>Explanation:</em></u>-
Given sample size 'n' = 500
Given variance of the Population = 900
The standard deviation of the Population = √900 = 30
The standard error of the mean is determined by

Answer: 20
Step-by-step explanation: Substitute the value of the variable into the equation and simplify. giving you 20
The answer is at least or more than 39 square feet
Answer: It will take 19.5 one-gallon containers
Explanation: We know that 1 liter is 0.26 gallons
All we need to do is to make a ratio
1 75
---- -----
0.26 ?
We need to do what we did on the top (times 75 to get 75) on the bottom (times 75 to get 19.5)
Hope this helps!