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Dmitrij [34]
3 years ago
9

When 440 junior college students were surveyed, 200 said they have a passport. Construct a 95% confidence interval for the propo

rtion of junior college students that have a passport.
Mathematics
1 answer:
nekit [7.7K]3 years ago
7 0
Sample proportion: 190/425 = 0.45
ME = 1.96*sqrt[0.45*0.55/425] = 0.047
-----
95% CI: 0.45-0.047 < p < 0.45+0.047
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