The pooled proportion here is computed as:
P = (58 + 7) / (650 + 2400) = 0.0213
The standard error here is computed as:
From standard normal tables, we have here:
P(-1.96 < Z < 1.96) = 0.95
The sample proportions here are computed as:
p1 = 58/650 = 0.0892
p2 = 7/2400 = 0.002917
Therefore the confidence interval here is obtained as:
L = p1 - p2 - z*SE = 0.0892 - 0.002917 - 1.96*0.0064 =
0.0737
U = p1 - p2 + z*SE = 0.0892 - 0.002917 + 1.96*0.0064 = 0.0988
Therefore the confidence interval here is from 0.0737 to 0.0988.
(1 point) In a study of red/green color blindness, 650 men and 2400 women are randomly...
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