Question
In: Statistics and Probability
Two libraries are comparing their success rate at getting books returned on time. Sample data is...
Two libraries are comparing their success rate at getting books returned on time.
Sample data is as follows:
Library A: n = 200 books 180 returned on time
Library B: n = 200 books 160 returned on time
Create a confidence interval at 99% confidence for the difference between the proportion of books returned at library A vs. the proportion of books returned at library B.
Solutions
Expert Solution
Let X1 = Library A and X2 = Library B
99% confidence interval for the difference between the population proportions p1 − p2 is 0.009 < p < 0.191, which indicates that we are 99% confident that the true difference between population proportions is contained by the interval (0.009 , 0.191).
◆ Confidence Interval Calculation-
orchestra answered 2 years agoRelated Solutions
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