Construct a 98 % Confidence Interval For $P _ { 1 } - P _ { 2 }$

Multiple Choice

Construct a 98 % confidence interval for $P _ { 1 } - P _ { 2 }$ The sample statistics listed below are from independent samples.
Sample statistics: $\mathrm { n } _ { 1 } = 1000 , \mathrm { x } _ { 1 } = 250 , \text { and } \mathrm { n } _ { 2 } = 1200 , \mathrm { x } _ { 2 } = 195$

A) (0.047,0.128)
B) (-0.621,0.781)
C) (0.581,1.819)
D) (1.516,3.021)