.21 times 611=128.31
128.31 plus 611
739.31
Answer: 90% confidence interval would be (0.448, 0.552).
Step-by-step explanation:
Since we have given that
x = 125
n = 250
So, 
We need to find the 90% confidence interval.
so, z = 1.64
So, interval would be

Hence, 90% confidence interval would be (0.448, 0.552)
Answer:
in family a you multiply by 7
In family b you multiply by 3
Step-by-step explanation:
Sorry if im wrong I should be right if im not then im really sorry :):(
Answer:
$50
Step-by-step explanation:
120% = 60
100% = x
120x = 6000
x = 6000/120
x = $50
Well this is what it is a ≈ 6.98