Mathematics, 20.03.2020 23:34 selfiegymnast
In a simple random sample of 1200 Americans age 20 and over, there were 138 people with diabetes.
Report the 90% confidence interval for the proportion of all Americans age 20 and over with diabetes.
Answers: 3
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
.
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In a simple random sample of 1200 Americans age 20 and over, there were 138 people with diabetes.
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