ANSWER
EXPLANATION
The given radical expression is
Recall and use
to obtain;
Simplify the second radicand.
We have two like surds so we can simplify to obtain;
Answer:
Just need points well I wish I was that smart
It means the sum of a number and 3.
Sum means to add up.
Answer: the margin of error is 0.02
Step-by-step explanation:
Confidence interval for population proportion is written as
Sample proportion ± margin of error
If the confidence interval for this population proportion is (0.52, 0.56.), it means that the lower boundary is 0.52 and the upper boundary is 0.56
Let x represent the sample proportion and y represent the margin of error. Therefore,
x - y = 0.52
x + y = 0.56
Subtracting the second equation from the first equation, it becomes
- 2y = - 0.04
y = - 0.04/-2
y = 0.02
