Construct a 98% confidence interval for 
- 
. The sample statistics listed below are from independent samples.Sample statistics: 
= 1000, 
= 250, and 
= 1200, 
= 195
A) (0.581, 1.819)
B) (-0.621, 0.781)
C) (0.047, 0.128)
D) (1.516, 3.021)
Correct Answer:
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