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23.08.2019 •
Mathematics
What does x equal if -2(x-3) equals
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Ответ:
The upper bound of a 95% confidence interval for the proportion of individuals over the age of 25 in Oregon who do not have a high school diploma is of 0.2568.
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 z-score that has a p-value of
.
95% confidence level
So
, z is the value of Z that has a p-value of 
, so 
.
In a sample of 234 individuals over the age of 25, chosen at random from the state of Oregon, 48 did not have a high school diploma.
This means that
The upper limit of this interval is:
The upper bound of a 95% confidence interval for the proportion of individuals over the age of 25 in Oregon who do not have a high school diploma is of 0.2568.