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Mathematics, 10.12.2019 00:31 memeE15
If a 90% confidence interval for the difference of proportions contains some positive and some negative values, what can we conclude about the relationship between p1 and p2 at the 90% confidence level?
a. there is a negative difference between p1 and p2.
b. there is no difference between p1 and p2.
c. there is a positive difference between p1 and p2.
d. we cannot make a conclusion about the relationship between p1 and p2.
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