Mathematics
18.09.2022 08:13
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hamaama
4,9(13 marks)
Oh shucks, that's crazy man
amazinga
4,8(1 marks)
The 99% confidence interval for the true proportion of Americans who were satisfied with the gun control laws in 2017 is (0.274, 0.526).
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 
.
For this problem, we have that:
99% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 99% confidence interval for the true proportion of Americans who were satisfied with the gun control laws in 2017 is (0.274, 0.526).
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