Answer:
Step-by-step explanation:
See the attached image
Answer:
Bro if u don't know the ques then ask ur mom or dad kid
Answer:
The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
The margin of error is:

95% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
72% of Americans said that they had at least one credit card
This means that 
Give the 95% margin of error for this estimate.


The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.
(-1,2) is a solution
y>x
2>-1 is correct
in this case yes
x+y≥x
-1+2≥-1
1≥-1 is correct: Yes
in this case no
x+y≥y
1≥2
is not correct. No