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.
Answer:
2004
Step-by-step explanation:
hope this is helpful
Answer:
9
Step-by-step explanation:
Please state the full question what percent of what DVD in her collection we dont have enough information to give you an answer, I will just list all the possible answers,
8+12+7+3 =30
Possible answers
Action = 8/30 = 26% or 27% depending if you are rounding
Comedy = 12/30 = 40%
Romance = 7/30 = 23%
Science Fiction = 3/30 = 10%
