Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using 
Where n=60 is the sample size and 
is the population standard deviation.
The critical value corresponding to 95% confidence interval is 
We substitute the values to obtain;
629.20/520=1.21
Powerof6V1.21= 1.0323
Rate of interest 3.23
Draw the parabola and see if the parabola matches the main curve
Answer:
the answer is 7
Step-by-step explanation:
Add the same term to both sides of the equation
-x=7x-56
−x=7x−56
−x−7x=7x−56−7x
Answer:
$1.25
Step-by-step explanation:
divide 10/8
equals $1.25
1.25x8=$ 10
