Answer:
It's the second option
Step-by-step explanation:
When inputting each of those numbers given in the question into the equation, you get the numbers in the second option.
Answer:
The margin of error associated with this confidence interval is 20
Step-by-step explanation:
A confidence interval has two bounds, a lower bound and an upper bound. The interval is symmetric, which means that the margin of error is the difference between these two bounds(upper - lower), divided by 2.
In this problem, we have that:
Lower bound: 520
Upper bound: 560
Determine the margin of error associated with this confidence interval.
(560 - 520)/2 = 20
The margin of error associated with this confidence interval is 20
Answer:
or 
Step-by-step explanation:
Step 1: Apply the fraction rule: 
Step 2: Cross-cancel common factor: 5
Step 3: Multiply fractions: 
Step 4: Multiply the numbers: 
Step 5: Multiply the numbers: 
Therefore, the answer is or in the simplified form;
D because say you got 2 boxes of pens, 20p would be 20(2)=40 you would have 40 pens.
